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José António Colaço Gomes Covas. Concluiu o(a) Título de Agregado em Ciência e Engenharia de Polímeros em 1996 pelo(a) Universidade do Minho Escola de Engenharia, Licenciatura em Mechanical Engineering em 1979 pelo(a) Universidade de Lisboa Instituto Superior Técnico e Doctor of Philosophy em Polymer Engineering & Science em 1985 pelo(a) University of Technology. É Evaluator of ERC calls no(a) European Commission, Associate Editor of Polímeros: Ciência e Tecnologia no(a) Universidade do Minho - Campus de Azurém, Reviewer for several national funding agencies, including NERSC (Canada), ANR (France), ARRS (Slovenia), ANVUR, CINECA (Italy), Poland and Universities (Linz, Austria), K U Leuven (Belgium) no(a) Universidade do Minho - Campus de Azurém, Member of the editorial board of the Journal of Polymer Engineering no(a) Universidade do Minho - Campus de Azurém, Editor-in-Chief of the International Polymer Processing Journal Member of the Executive Committe no(a) Universidade do Minho - Campus de Azurém, Member of the editorial board of the International Journal of Material Forming no(a) Universidade do Minho - Campus de Azurém, Vice-President of PIEP - Innovation Pole in Polymer Engineering no(a) Universidade do Minho - Campus de Azurém, Professor Catedrático no(a) Universidade do Minho, Executive Vice-President no(a) Pólo de Inovação em Engenharia de Polímeros e Member of the Advisory Council of the School of Engineering no(a) Universidade do Minho. Recebeu 2 prémio(s) e/ou homenagens. Atua na(s) área(s) de Ciências da Engenharia e Tecnologias com ênfase em Engenharia dos Materiais com ênfase em Engenharia dos Materiais.
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Identification

Personal identification

Full name
José António Colaço Gomes Covas

Citation names

  • Covas, José A
  • Covas, José António

Author identifiers

Ciência ID
7B16-AF92-D14D

Knowledge fields

  • Engineering and Technology - Materials Engineering - Materials Engineering

Languages

Language Speaking Reading Writing Listening Peer-review
English Advanced (C1) Advanced (C1) Advanced (C1) Advanced (C1)
French Intermediate (B1) Advanced (C1) Intermediate (B1) Intermediate (B1)
Education
Degree Classification
1996
Concluded
 Ciência e Engenharia de Polímeros (Título de Agregado)
Universidade do Minho Escola de Engenharia, Portugal
 Aprovado por unanimidade
1985
Concluded
 Polymer Engineering & Science (Doctor of Philosophy)
University of Technology, Iraq
 Approved
1979
Concluded
 Mechanical Engineering (Licenciatura)
Universidade de Lisboa Instituto Superior Técnico, Portugal
"not applicable" (THESIS/DISSERTATION)
 dezasseis
Affiliation

Teaching in Higher Education

Category
Host institution 		Employer
1998/11/01 - Current Full Professor (University Teacher) Universidade do Minho, Portugal
2013 - 2016 Visiting Professor (University Teacher) Universidade do Minho - Campus de Azurém, Portugal
Universidade Federal de São Carlos, Brazil

Others

Category
Host institution 		Employer
2020/05/04 - Current Editorial Advisory Board Member of the Science and Engineering of Composite Materials Journal Universidade do Minho - Campus de Azurém, Portugal
Universidade do Minho Instituto de Polímeros e Compósitos, Portugal
2020 - Current Advisory Board Member of the Polymer Engineering & Science journal Universidade do Minho - Campus de Azurém, Portugal
2020 - Current Editorial Board Member of the Polymers journal Universidade do Minho - Campus de Azurém, Portugal
2020 - Current Editorial Board Member of the Applied Nano Journal Universidade do Minho - Campus de Azurém, Portugal
2019/11/01 - Current President of the Council of the School of Engineering Universidade do Minho, Portugal
2017/01/01 - Current Editor-in-Chief of the International Polymer Processing Journal Universidade do Minho - Campus de Azurém, Portugal
2016/10/01 - Current Associate Editor of the Polímeros: Ciência e Tecnologia journal Universidade do Minho - Campus de Azurém, Portugal
2013/03/01 - Current Vice-President of PIEP - Innovation Pole in Polymer Engineering Universidade do Minho - Campus de Azurém, Portugal
2011/01/01 - Current Member of the editorial board of the Journal of Polymer Engineering Universidade do Minho - Campus de Azurém, Portugal
2009/01/01 - Current Evaluator of ERC calls European Commission, Belgium
2008/01/01 - Current Member of the editorial board of the International Journal of Material Forming journal Universidade do Minho - Campus de Azurém, Portugal
2007/01/01 - Current Reviewer for several national funding agencies, including FWF and LIT (Austria), FWO (Belgium), NERSC (Canada), ANR & HCERES (France), ANVUR, CINECA (Italy), Netherlands, Poland, ARRS (Slovenia) Universidade do Minho - Campus de Azurém, Portugal
2007/01/01 - Current Member of the editorial board of the Journal of Plastics Rubber & Composites: Macromolecular Engineering Universidade do Minho - Campus de Azurém, Portugal
2007 - Current Reviewer for A*Star (Singapore) and Universities (Linz, Austria), K U Leuven (Belgium) Universidade do Minho - Campus de Azurém, Portugal
2006/01/01 - Current Member of the international panel of reviewers of EPSRC, UK (ranked top 6%) Engineering and Physical Sciences Research Council, United Kingdom
2000 - Current Courses for Industry (Portugal, Brazil, Saudi Arabia, Spain) Universidade do Minho - Campus de Azurém, Portugal
2017/03/12 - 2019/03/15 Head of Polymer Engineering Departament Universidade do Minho, Portugal
2005/01/01 - 2016/12/31 Editor (Europe, Africa, Middle-East) International Polymer Processing Universidade do Minho - Campus de Azurém, Portugal
2008/08/01 - 2015/10/01 Coordinator Erasmus Mundus Master EURHEO Universidade do Minho - Campus de Azurém, Portugal
2013/03/01 - 2015/03/01 Member of the Council of the Engineering School Universidade do Minho, Portugal
2013/02 - 2013/03 Visiting Professor Universidade do Minho - Campus de Azurém, Portugal
Universidade Estadual do Rio Grande do Sul, Brazil
2008/01/01 - 2012/12/31 Vice-Director Institute for Polymers & Composites Universidade do Minho - Campus de Azurém, Portugal
2008/01/01 - 2012/01/01 Scientific Adviser CeNTI Universidade do Minho - Campus de Azurém, Portugal
2008 - 2012 Member of the Board I3N Universidade do Minho - Campus de Azurém, Portugal
2008/01/01 - 2011/01/01 Director Master in Polymer Properties and Technology (e-learning) Universidade do Minho - Campus de Azurém, Portugal
2006 - 2011 Member of the Board of SPINVALOR Universidade do Minho - Campus de Azurém, Portugal
2001/01/01 - 2005/06/01 (First) General Director PIEP Pólo de Inovação em Engenharia de Polímeros, Portugal
Projects

Contract

Designation Funders
2005 - Current Projects wih industry
XXX
Principal investigator
2005 - Current Research Projects
XXXX
Researcher
Universidade do Minho Instituto de Polímeros e Compósitos, Portugal
Outputs

Publications

Book
  1. Covas, José. Optimization in Polymer Processing. Hauppauge, United States: Nova Science Publs. 2011.
    Published • Editor
  2. Covas, José. Reologia e suas aplicações industriais. Portugal: Instituto Piaget. 2001.
    Published
  3. Covas, José. Extruder Principles and Operation. London, United Kingdom: Chapman & Hall. 1995.
Book chapter
  1. Covas, José. "Instrumentation". In Extrusion réactive, 75-89. Paris, France: Lavoisier Hermes, 2020.
    Published
  2. "New Material Concepts". In Additive Manufacturing Hybrid Processes for Composites Systems, 93-133. Switzerland: Springer Nature Switzerland AG,, 2020.
    Published
  3. "Experimental Testing and Process Parametrization". In Additive Manufacturing Hybrid Processes for Composites Systems, 237-263. Switzerland: Springer Nature Switzerland AG, 2020.
    Published
  4. Covas, José. "Monitoring Dispersion and Re-agglomeration Phenomena During the Manufacture of Polymer Nanocomposites". In Processing of Polymer Nanocomposites, 97-120. Munich, Germany: Carl Hanser Verlag GmbH & Co. KG, 2019.
  5. Covas, José. "Modelling of Flow and Heat Transfer, Mixing and Morphology Development in Plasticating Screw Extrusion of Polymer Systems". In Technological and Design Aspects of the Processing of Composites and nanocomposites, 43-64. Slovakia: Tech. Univ. Kosice, 2018.
  6. Campbell, Gregory A.; Spalding, Mark A.. "Modelling the Effect of Grooved Barrels on the Performance of Single Screw Extruders". In Technological and Design Aspects of the Processing of Composites and nanocomposites, 22-42. Slovakia: Tech. Univ. KosiceKG, 2018.
    10.3139/9783446432666.001
  7. Covas, José. "Optimization of Single Screw Extrusion". In Technological and Design Aspects of the Processing of Composites and nanocomposites, 7-21. Slovakia: Tech. Univ. Kosice, 2018.
  8. Covas, José. "Production and Processing of Polymer-based Nanocomposites". In Nanomaterials for Food Packaging - Materials, Processing Technologies and Safety Issues, 111-146. Amsterdam, Netherlands: Elsevier, 2018.
  9. Covas, José. "In-process Measurements for Reactive Extrusion Monitoring and Control". In Reactive Extrusion: Principles and Applications, 101-132. Wiley-VCH Verlag GmbH & Co. KGaA, 2018.
  10. Covas, José. "Carbon Nanofibres and Nanotubes for Composite Applications". In Fibrous and Textile Materials for Composite Applications. Springer Singapore, 2016.
  11. Covas, Jose A.; Pessan, Luiz Antonio; Machado, Ana V.; Larocca, Nelson M.. "Polymer Blend Compatibilization by Copolymers and Functional Polymers". In Encyclopedia of Polymer Blends, 315-356. Wiley-VCH Verlag & Co. KGaA, 2016.
    10.1002/9783527805242.ch7
  12. Machado, Ana Vera; Barbas, Joana Margarida; Covas, Jose Antonio. "Near IR Spectroscopy for the Characterization of Dispersion in Polymer-Clay Nanocomposites". In Synthesis Techniques for Polymer Nanocomposites, 241-266. Wiley-VCH Verlag GmbH & Co. KGaA, 2014.
    10.1002/9783527670307.ch10
  13. Covas, José. "Rotating Mandrel Dies". In Handbook of Design of Extrusion Forming Tools, 253-274. United Kingdom: Smithers Rapra, 2012.
  14. Covas, José. "On-line rheometry: a tool to monitor polymer nanocomposites production". In Novel Trends in Rheology IV, 147-155. Springer, 2011.
  15. Covas, José. "Using Matlab to Compute Heat Transfer In Free Form Extrusion". In MATLAB - A Ubiquitous Tool for the Practical Engineer, 453-474. intechopen, 2011.
  16. Covas, José. "Reactive Extrusion - Optimization of Representative Processes". In Optimization in Polymer Processing, 115-143. Hauppauge, United States: Nova Science Publs, 2011.
  17. Covas, José. "Polymer Extrusion - Setting the Operating Conditions and Defining the Screw Geometry". In Optimization in Polymer Processing, 87-113. Nova Science Publs, 2011.
  18. Covas, José. "Extending Optimization Algorithms to Complex Engineering Problems". In Optimization in Polymer Processing, 59-83. United States: Nova Science Publs, 2011.
  19. Utracki, L. A.. "Using TEM and SEM to unveil the role of nanoclays in polymer blends". In Microscopy: Science, Technology, Applications and Education, 1735-1740. Formatex, 2010.
    10.1007/0-306-48244-4_16
  20. Covas, José. "Rheology in Materials Engineering". In Rheology. Oxford, United Kingdom: Eolss Publishers, 2010.
  21. Covas, José. "Recent Developments on on-line Rheometry to Monitor the Extrusion Process". In Novel Trends in Rheology III. Amrican Institute of Physics, 2009.
  22. Covas, José. "Reactive polymer processing and design of stable micro- and nanostructures". In Advances in polymer processing, 579-621. CRC Press, 2009.
  23. Covas, José. "Evolutionary Multi-Objective Robust Optimization". In Advances in Evolutionary Algorithms, 261-278. InTech, 2008.
  24. Agassant, Jean-François; Covas, José António. "An Overview of Polymer Processing Modelling". In Advances in Material Forming, 37-59. Springer Paris, 2007.
    10.1007/978-2-287-72143-4_4
  25. Covas, José. "Morphology Development during Melt Preparation of PP/PS Blends". In Engineering with Polymers: a Europe – Latin America research experience, 51-56. Portugal: Univ. Minho, 2007.
  26. Covas, José. "Robutness Multi-Objective Evolutionary Algorithms". In Applications of Soft Computing. Springer Berlin Heidelberg, 2006.
  27. Covas, José. "Application of Evolutionary Algorithms to the Design of Barrier Forms for Single Screws Extruders". In Applied Soft Computing Technologies: The Challenge of Complexity. Springer-Verlag, 2006.
  28. Covas, José. "Extrusoras de laboratório para actividades de I&D". In SoftExtrusion 2004 – Modelação da Extrusão de Polímeros, 119-134. FLAD, 2005.
  29. Covas, José. "CAE aplicado ao projecto de sistemas de calibração/arrefecimento para perfis". In SoftExtrusion 2004 – Modelação da Extrusão de Polímeros, 99-117. Portugal: FLAD, 2005.
  30. Covas, José. "Modelação da mistura de polímeros em extrusoras monofuso". In SoftExtrusion 2004 – Modelação da Extrusão de Polímeros, 47-72. Portugal: FLAD, 2005.
  31. Covas, José. "Projecto assistido por computador de parafusos para extrusoras". In SoftExtrusion 2004 – Modelação da Extrusão de Polímeros, 1-26. Portugal: FLAD, 2005.
  32. Covas, José. "e-xtruder.net – concepção e desenvolvimento de um sistema automático de modelação e optimização de extrusoras". In SoftExtrusion 2004 – Modelação da Extrusão de Polímeros, 27-46. Portugal: FLAD, 2005.
  33. Covas, José. "Linha de extrusão laboratorial para a produção de filme tubular biorientado". In SoftExtrusion 2004 – Modelação da Extrusão de Polímeros, 135-143. Portugal, 2004.
  34. Covas, José. "RPSGAe - A Multiobjective Genetic Algorithm with Elitism: Application to Polymer Extrusion". In Metaheuristics for Multiobjective Optimisation. Springer Berlin Heidelberg, 2004.
  35. Covas, José. "Preparação de Novos Materiais por Processamento Reactivo". In Química de Polímeros, 93-120. Portugal: Univ. Coimbra, 2004.
  36. Covas, José. "The use of Evolutionary Algorithms to Solve Practical Problems in Polymer Extrusion". In Applications of Multi-Objective Evolutionary Algorithms. World Scientific, 2004.
  37. Covas, José. "Desenvolvimentos no Processamento de Polímeros". In Materiais Dois Mil. Portugal: IST Press, 2003.
  38. Covas, José. "Process Monitoring along the Extruder". In Polymer Process Engineering 03: Enhanced Polymer Processing, 119-136. United Kingdom: Bradford Univ, 2003.
  39. Covas, José. "Reometria". In Reologia e suas aplicações industriais, 89-130. Portugal: Instituto Piaget, 2001.
  40. Covas, José. "Reologia de Polímeros". In Reologia e suas aplicações industriais, 219-266. Portugal: Instituto Piaget, 2001.
  41. Covas, José. "The Inverse Problem in Polymer Processing". In Fundamentals of Polymer Engineering. Netherlands: Kluwer Academic Publs, 1995.
Edited book
  1. Covas, José. SoftExtrusion 2004 – Modelação da Extrusão de Polímeros. Guimaraes, Portugal: FLAD. 2005.
    Editor
  2. Covas, José. Rheological Fundamentals of Polymer Processing. Dordrecht, Netherlands: Kluwer Academic Publs. 1995.
    Published • Editor
Journal article
  1. Gaspar-Cunha, António; Covas, José A.; Sikora, Janusz. "Optimization of Polymer Processing: A Review (Part II-Molding Technologies)". Materials 15 3 (2022): 1138. http://dx.doi.org/10.3390/ma15031138.
    10.3390/ma15031138
  2. Gaspar-Cunha, António; Covas, José A.; Sikora, Janusz. "Optimization of Polymer Processing: A Review (Part I—Extrusion)". Materials 15 1 (2022): 384. http://dx.doi.org/10.3390/ma15010384.
    10.3390/ma15010384
  3. Nochebuena-Mora, Elesban; Mendes, Nuno; Lourenço, Paulo B.; Covas, José A.. "Vibration control systems: A review of their application to historical unreinforced masonry buildings". Journal of Building Engineering 44 (2021): 103333. http://dx.doi.org/10.1016/j.jobe.2021.103333.
    10.1016/j.jobe.2021.103333
  4. Duarte, Fernando Moura; Covas, José António; da Costa, Sidonie Fernandes. "Predicting the effect of build orientation and process temperatures on the performance of parts made by fused filament fabrication". Rapid Prototyping Journal ahead-of-p ahead-of-p (2021): http://dx.doi.org/10.1108/rpj-04-2021-0084.
    10.1108/rpj-04-2021-0084
  5. Silva, Magda; Gomes, Carina; Pinho, Isabel; Gonçalves, Hugo; Vale, Ana C.; Covas, José A.; Alves, Natália M.; Paiva, Maria C.. "Poly(Lactic Acid)/Graphite Nanoplatelet Nanocomposite Filaments for Ligament Scaffolds". Nanomaterials 11 11 (2021): 2796. http://dx.doi.org/10.3390/nano11112796.
    10.3390/nano11112796
  6. Teixeira, Paulo F.; Covas, José A.; Hilliou, Loïc. "In-Line Rheo-Optical Investigation of the Dispersion of Organoclay in a Polymer Matrix during Twin-Screw Compounding". Polymers 13 13 (2021): 2128. http://dx.doi.org/10.3390/polym13132128.
    10.3390/polym13132128
  7. Silva, Magda; Pinho, Isabel S.; Covas, José A.; Alves, Natália M.; Paiva, Maria C.. "3D printing of graphene-based polymeric nanocomposites for biomedical applications". Functional Composite Materials 2 1 (2021): http://dx.doi.org/10.1186/s42252-021-00020-6.
    10.1186/s42252-021-00020-6
  8. Costa, Sidonie F.; Duarte, Fernando M.; Covas, José A.. "The Effect of a Phase Change on the Temperature Evolution during the Deposition Stage in Fused Filament Fabrication". Computers 10 2 (2021): 19. http://dx.doi.org/10.3390/computers10020019.
    10.3390/computers10020019
  9. Costa, Sidonie F.; Duarte, Fernando M.; Covas, José A.. "Computer Aided Definition of the Printing Conditions of Parts Made by FFF". International Journal of Mechanical Engineering and Robotics Research (2021): 301-307. http://dx.doi.org/10.18178/ijmerr.10.6.301-307.
    10.18178/ijmerr.10.6.301-307
  10. Guerreiro, Miguel; Rompante, Joana; Leite, André Costa; Fernandes, Luís Paulo; Santos, Rosa Maria; Paiva, Maria Conceição; Covas, José António. "Development of electrically conductive polymer nanocomposites for the automotive cable industry". Polímeros 31 2 (2021): http://dx.doi.org/10.1590/0104-1428.20210017.
    10.1590/0104-1428.20210017
  11. Ferrás, Luís Lima; Fernandes, Célio; Semyonov, Denis; Nóbrega, João Miguel; Covas, José António. "Dispersion of Graphite Nanoplates in Polypropylene by Melt Mixing: The Effects of Hydrodynamic Stresses and Residence Time". Polymers 13 1 (2020): 102. http://dx.doi.org/10.3390/polym13010102.
    10.3390/polym13010102
  12. Teixeira, P. F.; Covas, J. A.; Suarez, M. J.; Angulo, I.; Hilliou, L.. "Film Blowing of PHB-Based Systems for Home Compostable Food Packaging". International Polymer Processing 35 5 (2020): 440-447. http://dx.doi.org/10.3139/217.3985.
    10.3139/217.3985
  13. Kharrat, F.; Khlif, M.; Hilliou, L.; Haboussi, M.; Covas, J.A.; Nouri, H.; Bradai, C.. "Minimally processed date palm (Phoenix dactylifera L.) leaves as natural fillers and processing aids in poly(lactic acid) composites designed for the extrusion film blowing of thin packages". Industrial Crops and Products 154 (2020): 112637. http://dx.doi.org/10.1016/j.indcrop.2020.112637.
    10.1016/j.indcrop.2020.112637
  14. Hilliou, Loic; Covas, José A. "In-process rheological monitoring of extrusion-based polymer processes". Polymer International 70 1 (2020): 24-33. http://dx.doi.org/10.1002/pi.6093.
    10.1002/pi.6093
  15. Teixeira, P.F.; Covas, J.A.; Hilliou, L.. "In-process assessment of clay dispersion in PLA during melt compounding: Effects of screw speed and filler content". Polymer Degradation and Stability 177 (2020): 109190. http://dx.doi.org/10.1016/j.polymdegradstab.2020.109190.
    10.1016/j.polymdegradstab.2020.109190
  16. Bicalho, Luciana Assumpção; Covas, José António; Canevarolo, Sebastião Vicente. "Online optical monitoring of polymer melting in a twin-screw extruder". Polymer Engineering & Science 60 9 (2020): 2163-2175. http://dx.doi.org/10.1002/pen.25460.
    10.1002/pen.25460
  17. Ivorra-Martinez, Juan; Quiles-Carrillo, Luis; Boronat, Teodomiro; Torres-Giner, Sergio; A. Covas, José. "Assessment of the Mechanical and Thermal Properties of Injection-Molded Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate)/Hydroxyapatite Nanoparticles Parts for Use in Bone Tissue Engineering". Polymers 12 6 (2020): 1389. http://dx.doi.org/10.3390/polym12061389.
    10.3390/polym12061389
  18. Infurna, Giulia; Teixeira, Paulo F.; Dintcheva, Nadka Tz.; Hilliou, Loic; La Mantia, Francesco Paolo; Covas, Jose A.. "Taking advantage of the functional synergism between carbon nanotubes and graphene nanoplatelets to obtain polypropylene-based nanocomposites with enhanced oxidative resistance". European Polymer Journal 133 (2020): 109796. http://dx.doi.org/10.1016/j.eurpolymj.2020.109796.
    10.1016/j.eurpolymj.2020.109796
  19. Gaspar, Hugo; Santos, Raquel; Teixeira, Paulo; Hilliou, Loic; Weir, Michael P.; Duif, Chris P.; Bouwman, Wim G.; et al. "Evolution of dispersion in the melt compounding of a model polymer nanocomposite system: A multi-scale study". Polymer Testing 76 (2019): 109-118. http://dx.doi.org/10.1016/j.polymertesting.2019.03.013.
    10.1016/j.polymertesting.2019.03.013
  20. Costa, Sónia; Teixeira, Paulo; Covas, José; Hilliou, Loic. "Assessment of Piezoelectric Sensors for the Acquisition of Steady Melt Pressures in Polymer Extrusion". Fluids 4 2 (2019): 66. http://dx.doi.org/10.3390/fluids4020066.
    10.3390/fluids4020066
  21. Kharrat, Fatma; Chaari, Rania; Khlif, Mohamed; Hilliou, Loic; Covas, Jos¿A.; Haboussi, Mohamed; Nouri, Hedi; Bradai, Chedly. "The Effect of the Process on Mechanical Properties of Polylactic Acid-Date Palm Leaf Fibers Composite Films Produced by Extrusion Blowing". Journal of Renewable Materials 7 9 (2019): 891-901. http://dx.doi.org/10.32604/jrm.2019.06827.
    10.32604/jrm.2019.06827
  22. Teixeira, P. F.; Sutera, F.; Scaffaro, R.; Covas, J. A.; Hilliou, L.. "Multi-parameter in-process monitoring of clay dispersion during melt compounding with PLA". Express Polymer Letters 13 3 (2019): 276-285. http://dx.doi.org/10.3144/expresspolymlett.2019.23.
    10.3144/expresspolymlett.2019.23
  23. Torres-Giner, S.; Hilliou, L.; Melendez-Rodriguez, B.; Figueroa-Lopez, K.J.; Madalena, D.; Cabedo, L.; Covas, J.A.; Vicente, A.A.; Lagaron, J.M.. "Melt processability, characterization, and antibacterial activity of compression-molded green composite sheets made of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) reinforced with coconut fibers impregnated with oregano essential oil". Food Packaging and Shelf Life 17 (2018): 39-49. http://dx.doi.org/10.1016/j.fpsl.2018.05.002.
    10.1016/j.fpsl.2018.05.002
  24. Gonçalves, Jordana; Lima, Patrícia; Krause, Beate; Pötschke, Petra; Lafont, Ugo; Gomes, José; Abreu, Cristiano; Paiva, Maria; Covas, José. "Electrically Conductive Polyetheretherketone Nanocomposite Filaments: From Production to Fused Deposition Modeling". Polymers 10 8 (2018): 925. http://dx.doi.org/10.3390/polym10080925.
    10.3390/polym10080925
  25. Dorigato, A; Freitas, V; Covas, JA; Paiva, MC; Brugnara, M; Pegoretti, A. "Evaluation of the role of carbon nanotubes on the electrical properties of poly(butylene terephthalate) nanocomposites for industrial applications". Journal of Elastomers & Plastics 51 1 (2018): 3-25. http://dx.doi.org/10.1177/0095244318768634.
    10.1177/0095244318768634
  26. Teixeira, P.F.; Ferrás, L.L.; Hilliou, L.; Covas, J.A.. "A new double-slit rheometrical die for in-process characterization and extrusion of thermo-mechanically sensitive polymer systems". Polymer Testing 66 (2018): 137-145. http://dx.doi.org/10.1016/j.polymertesting.2018.01.013.
    10.1016/j.polymertesting.2018.01.013
  27. Santos, Raquel; Mould, Sacha; Formánek, Petr; Paiva, Maria; Covas, José. "Effects of Particle Size and Surface Chemistry on the Dispersion of Graphite Nanoplates in Polypropylene Composites". Polymers 10 2 (2018): 222. http://dx.doi.org/10.3390/polym10020222.
    10.3390/polym10020222
  28. Rodrigues, P.; Santos, R. M.; Paiva, M. C.; Covas, J. A.. "Development of Dispersion during Compounding and Extrusion of Polypropylene/Graphite Nanoplates Composites". International Polymer Processing 32 5 (2017): 614-622. http://dx.doi.org/10.3139/217.3485.
    10.3139/217.3485
  29. Denysiuk, Roman; Recio, Gustavo; Covas, José António; Gaspar-Cunha, António. "Using multiobjective optimization algorithms and decision making support to solve polymer extrusion problems". Polymer Engineering & Science 58 4 (2017): 493-502. http://dx.doi.org/10.1002/pen.24732.
    10.1002/pen.24732
  30. Bicalho, Luciana Assumpção; da Silva, Jorge Manuel Jardim; Covas, José António; Canevarolo, Sebastião Vicente. "Real-time thermo-optical analysis of polymer samples by quantitative polarized optical microscopy". Journal of Thermal Analysis and Calorimetry 130 3 (2017): 2093-2103. http://dx.doi.org/10.1007/s10973-017-6714-5.
    10.1007/s10973-017-6714-5
  31. Costa, S.F.; Duarte, F.M.; Covas, J.A.. "Estimation of filament temperature and adhesion development in fused deposition techniques". Journal of Materials Processing Technology 245 (2017): 167-179. http://dx.doi.org/10.1016/j.jmatprotec.2017.02.026.
    10.1016/j.jmatprotec.2017.02.026
  32. Gaspar, Hugo; Teixeira, Paulo; Santos, Raquel; Fernandes, Liliana; Hilliou, Loic; Weir, Michael P.; Parnell, Andrew J.; et al. "A Journey along the Extruder with Polystyrene:C60 Nanocomposites: Convergence of Feeding Formulations into a Similar Nanomorphology". Macromolecules 50 8 (2017): 3301-3312. http://dx.doi.org/10.1021/acs.macromol.6b02283.
    10.1021/acs.macromol.6b02283
  33. Hilliou, Loic; Teixeira, Paulo F.; Machado, Diogo; Covas, José A.; Oliveira, Catarina S.S.; Duque, Anouk F.; Reis, Maria A.M.. "Effects of fermentation residues on the melt processability and thermomechanical degradation of PHBV produced from cheese whey using mixed microbial cultures". Polymer Degradation and Stability 128 (2016): 269-277. http://dx.doi.org/10.1016/j.polymdegradstab.2016.03.031.
    10.1016/j.polymdegradstab.2016.03.031
  34. Carson, Sidney O.; Maia, João M.; Covas, José A.. "A New Extensional Mixing Element for Improved Dispersive Mixing in Twin-Screw Extrusion, Part 2: Experimental Validation for Immiscible Polymer Blends". Advances in Polymer Technology 37 1 (2016): 167-175. http://dx.doi.org/10.1002/adv.21653.
    10.1002/adv.21653
  35. Santos, R. M.; Vilaverde, C.; Cunha, E.; Paiva, M. C.; Covas, J. A.. "Probing dispersion and re-agglomeration phenomena upon melt-mixing of polymer-functionalized graphite nanoplates". Soft Matter 12 1 (2016): 77-86. http://dx.doi.org/10.1039/c5sm01366f.
    10.1039/c5sm01366f
  36. Carson, Sidney O.; Covas, José A.; Maia, João M.. "A New Extensional Mixing Element for Improved Dispersive Mixing in Twin-Screw Extrusion, Part 1: Design and Computational Validation". Advances in Polymer Technology 36 4 (2015): 455-465. http://dx.doi.org/10.1002/adv.21627.
    10.1002/adv.21627
  37. Vilaverde, C.; Santos, R.M.; Paiva, M.C.; Covas, J.A.. "Dispersion and re-agglomeration of graphite nanoplates in polypropylene melts under controlled flow conditions". Composites Part A: Applied Science and Manufacturing 78 (2015): 143-151. http://dx.doi.org/10.1016/j.compositesa.2015.08.010.
    10.1016/j.compositesa.2015.08.010
  38. Teixeira, Paulo F.; Maia, João M.; Covas, José A.; Hilliou, Loic. "A Small-Scale Experimental Extrusion Set-Up for Exploring Relationships Between Process-Induced Structures and Characteristics of Multiphase Polymer Systems". Macromolecular Materials and Engineering 300 12 (2015): 1278-1289. http://dx.doi.org/10.1002/mame.201500196.
    10.1002/mame.201500196
  39. Teixeira, Paulo F.; Fernandes, Susete N.; Canejo, João; Godinho, Maria Helena; Covas, José A.; Leal, Catarina; Hilliou, Loic. "Rheo-optical characterization of liquid crystalline acetoxypropylcellulose melt undergoing large shear flow and relaxation after flow cessation". Polymer 71 (2015): 102-112. http://dx.doi.org/10.1016/j.polymer.2015.06.056.
    10.1016/j.polymer.2015.06.056
  40. Adesina, Ayuba A.; Nasser, M.N.; Teixeira, Paulo; Hilliou, Loic; Covas, Jose A.; Hussein, Ibnelwaleed A.. "Rheology of organoclay assisted extrusion of HDPE using Particle Image Velocimetry". Chemical Engineering Research and Design 100 (2015): 113-125. http://dx.doi.org/10.1016/j.cherd.2015.05.018.
    10.1016/j.cherd.2015.05.018
  41. Cunha, Eunice; Paiva, Maria C.; Hilliou, Loic; Covas, José A.. "Tracking the progression of dispersion of graphite nanoplates in a polypropylene matrix by melt mixing". Polymer Composites 38 5 (2015): 947-954. http://dx.doi.org/10.1002/pc.23657.
    10.1002/pc.23657
  42. Cunha, Mara; Fernandes, Bruno; Covas, José A.; Vicente, António A.; Hilliou, Loïc. "Film blowing of PHBV blends and PHBV-based multilayers for the production of biodegradable packages". Journal of Applied Polymer Science 133 2 (2015): n/a-n/a. http://dx.doi.org/10.1002/app.42165.
    10.1002/app.42165
  43. Kaur, Amandeep; Singh, Inderpreet; Kumar, Jitender; Bhatnagar, Chhavi; Dixit, Shiv Kumar; Bhatnagar, Pramod Kumar; Mathur, Parmatma Chandra; Covas, Jose Antonio; Conceicao Paiva, Maria da. "Enhancement in the performance of multi-walled carbon nanotube: Poly(methylmethacrylate) composite thin film ethanol sensors through appropriate nanotube functionalization". Materials Science in Semiconductor Processing 31 (2015): 166-174. http://dx.doi.org/10.1016/j.mssp.2014.11.030.
    10.1016/j.mssp.2014.11.030
  44. Costa, S.F.; Duarte, F.M.; Covas, J.A.. "Thermal conditions affecting heat transfer in FDM/FFE: a contribution towards the numerical modelling of the process". Virtual and Physical Prototyping 10 1 (2014): 35-46. http://dx.doi.org/10.1080/17452759.2014.984042.
    10.1080/17452759.2014.984042
  45. Fernandes, Emanuel M.; Aroso, Ivo M.; Mano, João F.; Covas, José A.; Reis, Rui L.. "Functionalized cork-polymer composites (CPC) by reactive extrusion using suberin and lignin from cork as coupling agents". Composites Part B: Engineering 67 (2014): 371-380. http://dx.doi.org/10.1016/j.compositesb.2014.07.028.
    10.1016/j.compositesb.2014.07.028
  46. Teixeira, Cristina; Covas, José; Stützle, Thomas; Gaspar-Cunha, António. "Hybrid algorithms for the twin–screw extrusion configuration problem". Applied Soft Computing 23 (2014): 298-307. http://dx.doi.org/10.1016/j.asoc.2014.06.022.
    10.1016/j.asoc.2014.06.022
  47. Cyriac, Febin; Covas, José A.; Hilliou, Loic Hugues Gilles; Vittorias, Iakovos. "Predicting extrusion instabilities of commercial polyethylene from non-linear rheology measurements". Rheologica Acta 53 10-11 (2014): 817-829. http://dx.doi.org/10.1007/s00397-014-0798-7.
    10.1007/s00397-014-0798-7
  48. Michelangelli, O.P.; Gaspar-Cunha, A.; Covas, J.A.. "The influence of pellet–barrel friction on the granular transport in a single screw extruder". Powder Technology 264 (2014): 401-408. http://dx.doi.org/10.1016/j.powtec.2014.05.066.
    10.1016/j.powtec.2014.05.066
  49. Gaspar-Cunha, A.; Covas, J. A.. "The Plasticating Sequence in Barrier Extrusion Screws Part II: Experimental Assessment". Polymer-Plastics Technology and Engineering 53 14 (2014): 1456-1466. http://dx.doi.org/10.1080/03602559.2014.909482.
    10.1080/03602559.2014.909482
  50. Teixeira, Paulo F.; Maia, João M.; Covas, José A.; Hilliou, Loic. "In-line particle size assessment of polymer suspensions during processing". Polymer Testing 37 (2014): 68-77. http://dx.doi.org/10.1016/j.polymertesting.2014.05.001.
    10.1016/j.polymertesting.2014.05.001
  51. Cunha, Mara; Berthet, Marie-Alix; Pereira, Ricardo; Covas, José A.; Vicente, António A.; Hilliou, Loïc. "Development of polyhydroxyalkanoate/beer spent grain fibers composites for film blowing applications". Polymer Composites 36 10 (2014): 1859-1865. http://dx.doi.org/10.1002/pc.23093.
    10.1002/pc.23093
  52. Gehlen, Aline; Ornaghi Junior, Heitor Luiz; Pistor, Vinicius; Covas, José António; Zeni, Mara; Zattera, Ademir José. "Influence of different organomodified clays on the viscoelastic response of ethylene vinyl acetate//poly(vinyl chloride)/organoclay nanocomposites". Journal of Elastomers & Plastics 47 7 (2014): 636-646. http://dx.doi.org/10.1177/0095244314534099.
    10.1177/0095244314534099
  53. Pistor, Vinicius; Covas, José A.; Zattera, Ademir José. "Influence of screw speed on the mechanical and rheological properties of poly(ethylene-co-vinyl acetate)-organomodified montmorillonite nanocomposites". Polymer Composites 36 5 (2014): 854-860. http://dx.doi.org/10.1002/pc.23004.
    10.1002/pc.23004
  54. Mould, S.; Barbas, J.; Machado, A. V.; Nóbrega, J. M.; Covas, J. A.. "Preparation of Polymer-Clay Nanocomposites by Melt Mixing in a Twin Screw Extruder: Using On-Line SAOS Rheometry to Assess the Level of Dispersion". International Polymer Processing 29 1 (2014): 63-70. http://dx.doi.org/10.3139/217.2803.
    10.3139/217.2803
  55. Mould, S.; Barbas, J.; Machado, A. V.; Nóbrega, J. M.; Covas, J. A.. "Preparation of Polymer-Clay Nanocomposites by Melt Mixing in a Twin Screw Extruder: Using On-Line SAOS Rheometry to Assess the Level of Dispersion". International Polymer Processing 29 1 (2014): 63-70. http://dx.doi.org/10.3139/217.2803.
    10.3139/217.2803
  56. Barbas, Joana M.; Machado, Ana V.; Covas, José A.. "Processing Conditions Effect on Dispersion Evolution in a Twin-Screw Extruder: Polypropylene-Clay Nanocomposites". Chemical Engineering & Technology 37 2 (2014): 257-266. http://dx.doi.org/10.1002/ceat.201300303.
    10.1002/ceat.201300303
  57. Gaspar-Cunha, António; Covas, José A.. "An Engineering Scale-Up Approach using Multi-Objective Optimization". International Journal of Natural Computing Research 4 1 (2014): 17-30. http://dx.doi.org/10.4018/ijncr.2014010102.
    10.4018/ijncr.2014010102
  58. Bernacka-Wojcik, Iwona; Ribeiro, Susana; Wojcik, Pawel Jerzy; Alves, Pedro Urbano; Busani, Tito; Fortunato, Elvira; Baptista, Pedro Viana; et al. "Experimental optimization of a passive planar rhombic micromixer with obstacles for effective mixing in a short channel length". RSC Adv. 4 99 (2014): 56013-56025. http://dx.doi.org/10.1039/c4ra10160j.
    10.1039/c4ra10160j
  59. Gaspar-Cunha, A.; Covas, J.A.. "The plasticating sequence in barrier extrusion screws part I: Modeling". Polymer Engineering & Science 54 8 (2013): 1791-1803. http://dx.doi.org/10.1002/pen.23722.
    10.1002/pen.23722
  60. Barbas, J.M.; Machado, A.V.; Covas, J.A.. "Evolution of dispersion along the extruder during the manufacture of polymer–organoclay nanocomposites". Chemical Engineering Science 98 (2013): 77-87. http://dx.doi.org/10.1016/j.ces.2013.05.004.
    10.1016/j.ces.2013.05.004
  61. Novais, Rui M.; Simon, Frank; Pötschke, Petra; Villmow, Tobias; Covas, José A.; Paiva, Maria C.. "Poly(lactic acid) composites with poly(lactic acid)-modified carbon nanotubes". Journal of Polymer Science Part A: Polymer Chemistry 51 17 (2013): 3740-3750. http://dx.doi.org/10.1002/pola.26778.
    10.1002/pola.26778
  62. Jamali, Safa; Paiva, Maria C.; Covas, José A.. "Dispersion and re-agglomeration phenomena during melt mixing of polypropylene with multi-wall carbon nanotubes". Polymer Testing 32 4 (2013): 701-707. http://dx.doi.org/10.1016/j.polymertesting.2013.03.005.
    10.1016/j.polymertesting.2013.03.005
  63. Teixeira, Paulo F.; Hilliou, Loic; Covas, José A.; Maia, João M.. "Assessing the practical utility of the hole-pressure method for the in-line rheological characterization of polymer melts". Rheologica Acta 52 7 (2013): 661-672. http://dx.doi.org/10.1007/s00397-013-0695-5.
    10.1007/s00397-013-0695-5
  64. Novais, Rui M.; Simon, Frank; Paiva, Maria C.; Covas, José A.. "The influence of carbon nanotube functionalization route on the efficiency of dispersion in polypropylene by twin-screw extrusion". Composites Part A: Applied Science and Manufacturing 43 12 (2012): 2189-2198. http://dx.doi.org/10.1016/j.compositesa.2012.08.004.
    10.1016/j.compositesa.2012.08.004
  65. Teixeira, Cristina; Gaspar-Cunha, António; Covas, José A.. "Flow and Heat Transfer Along the Length of a Co-rotating Twin Screw Extruder". Polymer-Plastics Technology and Engineering 51 15 (2012): 1567-1577. http://dx.doi.org/10.1080/03602559.2012.716477.
    10.1080/03602559.2012.716477
  66. Mould, S. T.; Barbas, J. M.; Machado, A. V.; Nóbrega, J. M.; Covas, J. A.. "Monitoring the Production of Polymer Nanocomposites by Melt Compounding with On-line Rheometry". International Polymer Processing 27 5 (2012): 527-534. http://dx.doi.org/10.3139/217.2597.
    10.3139/217.2597
  67. Gaspar-Cunha, A; Carneiro, O S; Cunha, S M; Covas, J A. "Laboratory modular instrumented single screw extruder for optimisation of polymer processing". Plastics, Rubber and Composites 41 9 (2012): 373-383. http://dx.doi.org/10.1179/1743289812y.0000000006.
    10.1179/1743289812y.0000000006
  68. Cardoso, P.; Klosterman, D.; Covas, J.A.; van Hattum, F.W.J.; Lanceros-Mendez, S.. "Quantitative evaluation of the dispersion achievable using different preparation methods and DC electrical conductivity of vapor grown carbon nanofiber/epoxy composites". Polymer Testing 31 5 (2012): 697-704. http://dx.doi.org/10.1016/j.polymertesting.2012.04.006.
    10.1016/j.polymertesting.2012.04.006
  69. Carneiro, O. S.; Covas, J. A.; Domingues, C.. "Bi-axially Oriented Blown Film Technology". International Polymer Processing 27 3 (2012): 348-357. http://dx.doi.org/10.3139/217.2538.
    10.3139/217.2538
  70. Barbas, Joana M.; Machado, Ana V.; Covas, José A.. "In-line near-infrared spectroscopy: A tool to monitor the preparation of polymer-clay nanocomposites in extruders". Journal of Applied Polymer Science 127 6 (2012): 4899-4909. http://dx.doi.org/10.1002/app.38106.
    10.1002/app.38106
  71. Ferreira, A; Cardoso, P; Klosterman, D; Covas, J A; van Hattum, F W J; Vaz, F; Lanceros-Mendez, S. "Effect of filler dispersion on the electromechanical response of epoxy/vapor-grown carbon nanofiber composites". Smart Materials and Structures 21 7 (2012): 075008. http://dx.doi.org/10.1088/0964-1726/21/7/075008.
    10.1088/0964-1726/21/7/075008
  72. Novais, Rui M.; Covas, José A.; Paiva, Maria C.. "The effect of flow type and chemical functionalization on the dispersion of carbon nanofiber agglomerates in polypropylene". Composites Part A: Applied Science and Manufacturing 43 6 (2012): 833-841. http://dx.doi.org/10.1016/j.compositesa.2012.01.017.
    10.1016/j.compositesa.2012.01.017
  73. Barbas, J.M.; Machado, A.V.; Covas, J.A.. "In-line near-infrared spectroscopy for the characterization of dispersion in polymer-clay nanocomposites". Polymer Testing 31 4 (2012): 527-536. http://dx.doi.org/10.1016/j.polymertesting.2012.02.005.
    10.1016/j.polymertesting.2012.02.005
  74. Domingues, Natália; Gaspar-Cunha, António; Covas, José António. "A quantitative approach to assess the mixing ability of single-screw extruders for polymer extrusion". Journal of Polymer Engineering 32 2 (2012): http://dx.doi.org/10.1515/polyeng-2012-0501.
    10.1515/polyeng-2012-0501
  75. Teixeira, Cristina; Covas, J. A.; Stützle, Thomas; Gaspar-Cunha, A.. "Multi-objective ant colony optimization for the twin-screw configuration problem". Engineering Optimization 44 3 (2012): 351-371. http://dx.doi.org/10.1080/0305215x.2011.639370.
    10.1080/0305215x.2011.639370
  76. Cardoso, P.; Silva, J.; Klosterman, D.; Covas, J.A.; van Hattum, F.W.J.; Simoes, R.; Lanceros-Mendez, S.. "The role of disorder on the AC and DC electrical conductivity of vapour grown carbon nanofibre/epoxy composites". Composites Science and Technology 72 2 (2012): 243-247. http://dx.doi.org/10.1016/j.compscitech.2011.11.008.
    10.1016/j.compscitech.2011.11.008
  77. Michelangelli, O P; Yamanoi, M; Gaspar-Cunha, A; Covas, J A. "Modelling pellet flow in single extrusion with DEM". Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 225 4 (2011): 255-268. http://dx.doi.org/10.1177/0954408911418159.
    10.1177/0954408911418159
  78. Mould, S.; Barbas, J.; Machado, A.V.; Nóbrega, J.M.; Covas, J.A.. "Measuring the rheological properties of polymer melts with on-line rotational rheometry". Polymer Testing 30 6 (2011): 602-610. http://dx.doi.org/10.1016/j.polymertesting.2011.05.002.
    10.1016/j.polymertesting.2011.05.002
  79. Carneiro, OS; Covas, JA; Reis, R; Brulé, B; Flat, JJ. "The effect of processing conditions on the characteristics of electrically conductive thermoplastic composites". Journal of Thermoplastic Composite Materials 25 5 (2011): 607-629. http://dx.doi.org/10.1177/0892705711417032.
    10.1177/0892705711417032
  80. Pötschke, Petra; Kobashi, Kazufumi; Villmow, Tobias; Andres, Timo; Paiva, Maria Conceição; Covas, José António. "Liquid sensing properties of melt processed polypropylene/poly(e-caprolactone) blends containing multiwalled carbon nanotubes". Composites Science and Technology 71 12 (2011): 1451-1460. http://dx.doi.org/10.1016/j.compscitech.2011.05.019.
    10.1016/j.compscitech.2011.05.019
  81. Covas, J. A.; Almeida, M. F.; Machado, A. V.; Larocca, N. M.; Pessan, L. A.. "Nanoclays Dispersion in a PA6/PP Blend by Twin Screw Compounding". Macromolecular Symposia 301 1 (2011): 55-62. http://dx.doi.org/10.1002/masy.201150308.
    10.1002/masy.201150308
  82. Cho, Seahan; Hong, Joung Sook; Lee, Seung Jong; Ahn, Kyung Hyun; Covas, José António; Maia, João Manuel. "Morphology and Rheology of Polypropylene/Polystyrene/Clay Nanocomposites in Batch and Continuous Melt Mixing Processes". Macromolecular Materials and Engineering 296 3-4 (2011): 341-348. http://dx.doi.org/10.1002/mame.201000194.
    10.1002/mame.201000194
  83. Cardoso, Paulo; Silva, Jaime; Klosterman, Donald; Covas, José A; van Hattum, Ferrie WJ; Simoes, Ricardo; Lanceros-Mendez, Senentxu. "The influence of the dispersion method on the electrical properties of vapor-grown carbon nanofiber/epoxy composites". Nanoscale Research Letters 6 1 (2011): 370. http://dx.doi.org/10.1186/1556-276x-6-370.
    10.1186/1556-276x-6-370
  84. Teixeira, Cristina; Covas, José; Stützle, Thomas; Gaspar-Cunha, A.. "Engineering an efficient two-phase local search algorithm for the co-rotating twin-screw extruder configuration problem". International Transactions in Operational Research 18 2 (2010): 271-291. http://dx.doi.org/10.1111/j.1475-3995.2010.00798.x.
    10.1111/j.1475-3995.2010.00798.x
  85. Teixeira, Cristina; Covas, José A.; Berzin, Françoise; Vergnes, Bruno; Gaspar-Cunha, António. "Application of evolutionary algorithms to the definition of the optimal twin-screw extruder configuration for starch cationization". Polymer Engineering & Science 51 2 (2010): 330-340. http://dx.doi.org/10.1002/pen.21801.
    10.1002/pen.21801
  86. Correlo, Vitor M.; Costa-Pinto, Ana R.; Sol, Paula; Covas, José A.; Bhattacharya, Mrinal; Neves, Nuno M.; Reis, Rui L.. "Melt Processing of Chitosan-Based Fibers and Fiber-Mesh Scaffolds for the Engineering of Connective Tissues". Macromolecular Bioscience 10 12 (2010): 1495-1504. http://dx.doi.org/10.1002/mabi.201000011.
    10.1002/mabi.201000011
  87. Mathew, M.T.; Novo, J.; Rocha, L.A.; Covas, J.A.; Gomes, J.R.. "Tribological, rheological and mechanical characterization of polymer blends for ropes and nets". Tribology International 43 8 (2010): 1400-1409. http://dx.doi.org/10.1016/j.triboint.2010.01.011.
    10.1016/j.triboint.2010.01.011
  88. Domingues, N.; Gaspar-Cunha, A.; Covas, J.A.. "Estimation of the morphology development of immiscible liquid-liquid systems during single screw extrusion". Polymer Engineering & Science 50 11 (2010): 2194-2204. http://dx.doi.org/10.1002/pen.21756.
    10.1002/pen.21756
  89. Domingues, N.; Camesasca, M.; Kaufman, M.; Manas-Zloczower, I.; Gaspar-Cunha, A.; Covas, J. A.. "Modeling of Agglomerate Dispersion in Single Screw Extruders". International Polymer Processing 25 3 (2010): 251-257. http://dx.doi.org/10.3139/217.2350.
    10.3139/217.2350
  90. Domingues, N.; Gaspar-Cunha, A.; Covas, J. A.; Camesasca, M.; Kaufman, M.; Manas-Zloczower, I.. "Dynamics of Filler Size and Spatial Distribution in a Plasticating Single Screw Extruder – Modeling and Experimental Observations". International Polymer Processing 25 3 (2010): 188-198. http://dx.doi.org/10.3139/217.2319.
    10.3139/217.2319
  91. Machado, H. B.; Correia, Rui N.; Covas, J. A.. "Synthesis, extrusion and rheological behaviour of PU/HA composites for biomedical applications". Journal of Materials Science: Materials in Medicine 21 7 (2010): 2057-2066. http://dx.doi.org/10.1007/s10856-010-4079-4.
    10.1007/s10856-010-4079-4
  92. Costa, S.F.; Duarte, Fernando M.; Covas, José A.. "Modelling of the Thermal Behaviour of Free Form Extrusion". Materials Science Forum 636-637 (2010): 833-839. http://dx.doi.org/10.4028/www.scientific.net/msf.636-637.833.
    10.4028/www.scientific.net/msf.636-637.833
  93. Almeida, Maria Ferreira; Machado, Ana Vera; Covas, José A.. "The Morphology during Extrusion of PA6/PP Blends in the Presence of Nanoclays". Materials Science Forum 636-637 (2010): 840-845. http://dx.doi.org/10.4028/www.scientific.net/msf.636-637.840.
    10.4028/www.scientific.net/msf.636-637.840
  94. Yquel, V.; Machado, A. V.; Covas, J. A.; Flat, J. J.. "Contribution of the melting stage to the evolution of the morphology and chemical conversion of immiscible polyamide/polyethylene blends in twin-screw extruders". Journal of Applied Polymer Science 114 3 (2009): 1768-1776. http://dx.doi.org/10.1002/app.30680.
    10.1002/app.30680
  95. Cunha, S. M.; Gaspar-Cunha, A.; Covas, J. A.. "Melting of polymer blends in single-screw extrusion - an experimental study". International Journal of Material Forming 2 S1 (2009): 729-732. http://dx.doi.org/10.1007/s12289-009-0600-z.
    10.1007/s12289-009-0600-z
  96. Almeida, M. F.; Machado, A. V.; Covas, J. A.; Larocca, N. M.; Pessan, L. A.. "Dispersion mechanisms of nanoclays in a polymer matrix by electron microscopy". Microscopy and Microanalysis 15 S3 (2009): 89-90. http://dx.doi.org/10.1017/s1431927609990900.
    10.1017/s1431927609990900
  97. Covas, J. A.; Gaspar-Cunha, A.. "Extrusion Scale-up: An Optimization-based Methodology". International Polymer Processing 24 1 (2009): 67-82. http://dx.doi.org/10.3139/217.2200.
    10.3139/217.2200
  98. Jiménez, Laura; Rocha, A.M.; Aranberri, I.; Covas, José A.; Catarino, A.P.. "Electrically Conductive Monofilaments for Smart Textiles". Advances in Science and Technology 60 (2008): 58-63. http://dx.doi.org/10.4028/www.scientific.net/ast.60.58.
    10.4028/www.scientific.net/ast.60.58
  99. Duarte, F. M.; Covas, J. A.. "Multilayer plug concept to enhance thickness distribution control of deep thermoformed parts". Plastics, Rubber and Composites 37 7 (2008): 293-300. http://dx.doi.org/10.1179/174328908x314316.
    10.1179/174328908x314316
  100. Cunha, S.M.; Gaspar-Cunha, António; Covas, José A.. "Melting of PP/PA6 Polymer Blends in Single Screw Extruders – An Experimental Study". Materials Science Forum 587-588 (2008): 505-509. http://dx.doi.org/10.4028/www.scientific.net/msf.587-588.505.
    10.4028/www.scientific.net/msf.587-588.505
  101. Carneiro, O.S.; Reis, R.; Covas, J.A.. "Small-scale production of co-extruded biaxially oriented blown film". Polymer Testing 27 4 (2008): 527-537. http://dx.doi.org/10.1016/j.polymertesting.2008.02.010.
    10.1016/j.polymertesting.2008.02.010
  102. Domingues, N.; Gaspar-Cunha, A.; Covas, J. A.. "Global Mixing Indices for Single Screw Extrusion". International Journal of Material Forming 1 S1 (2008): 723-726. http://dx.doi.org/10.1007/s12289-008-0317-4.
    10.1007/s12289-008-0317-4
  103. Costa, S. F.; Duarte, F. M.; Covas, J. A.. "Towards modelling of Free Form Extrusion: analytical solution of transient heat transfer". International Journal of Material Forming 1 S1 (2008): 703-706. http://dx.doi.org/10.1007/s12289-008-0312-9.
    10.1007/s12289-008-0312-9
  104. Covas, J.A.; Maia, J.M.; Machado, A.V.; Costa, P.. "On-line rotational rheometry for extrusion and compounding operations". Journal of Non-Newtonian Fluid Mechanics 148 1-3 (2008): 88-96. http://dx.doi.org/10.1016/j.jnnfm.2007.04.009.
    10.1016/j.jnnfm.2007.04.009
  105. Gaspar-Cunha, A.; Covas, J. A.. "Robustness in multi-objective optimization using evolutionary algorithms". Computational Optimization and Applications 39 1 (2007): 75-96. http://dx.doi.org/10.1007/s10589-007-9053-9.
    10.1007/s10589-007-9053-9
  106. Canto, L. B.; Mantovani, G. L.; Covas, J. A.; Hage, E.; Pessan, L. A.. "Phase morphology development during processing of compatibilized and uncompatibilized PBT/ABS blends". Journal of Applied Polymer Science 104 1 (2007): 102-110. http://dx.doi.org/10.1002/app.24518.
    10.1002/app.24518
  107. Duarte, Fernando M.; Covas, José A.. "Multilayer Plug Assisted Thermoforming-Concept and Practical Usefulness". Materials Science Forum 514-516 (2006): 1467-1471. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.1467.
    10.4028/www.scientific.net/msf.514-516.1467
  108. Domingues, Natália; Gaspar-Cunha, António; Covas, José A.. "Modelling of Mixing in Single Screw Extruders". Materials Science Forum 514-516 (2006): 1409-1413. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.1409.
    10.4028/www.scientific.net/msf.514-516.1409
  109. Leer, Carla; Carneiro, Olga S.; Covas, José A.; Maia, João M.; van Hattum, Ferrie W.J.; Bernardo, Carlos A.; Biró, László Péter; Horváth, Zsolt E.; Kiricsi, Imre. "Dispersion of Carbon Nanotubes in Polycarbonate and Its Effect on the Composite Properties". Materials Science Forum 514-516 (2006): 1125-1130. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.1125.
    10.4028/www.scientific.net/msf.514-516.1125
  110. Machado, Ana Vera; van Duin, Martin; Covas, José A.. "Dynamic Vulcanisation of EPDM-Based Thermoplastic Vulcanisates during Extrusion: Effect of Processing Conditions". Materials Science Forum 514-516 (2006): 838-842. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.838.
    10.4028/www.scientific.net/msf.514-516.838
  111. Martins, M. R.; Covas, J. A.. "Helical flow during rotational pipe extrusion". Plastics, Rubber and Composites 35 2 (2006): 59-66. http://dx.doi.org/10.1179/174328906x79950.
    10.1179/174328906x79950
  112. Vera Machado, Ana; Yquel, Virginie; Covas, José Antonio; Flat, Jean-Jacques; Ghamri, Nessim; Wollny, Andreas. "The Effect of the Compatibilization Route of PA/PO Blends on the Physico-chemical Phenomena Developing Along a Twin-screw Extruder". Macromolecular Symposia 233 1 (2006): 86-94. http://dx.doi.org/10.1002/masy.200690032.
    10.1002/masy.200690032
  113. Bassani, Adriane; Hage Jr, Elias; Pessan, Luiz A.; Machado, Ana V; Covas, José A.. "Evolução da morfologia de fases de blendas PA6/AES em extrusora de dupla rosca e moldagem por injeção". Polímeros 15 3 (2005): 176-185. http://dx.doi.org/10.1590/s0104-14282005000300007.
    10.1590/s0104-14282005000300007
  114. Covas, J. A.; Machado, A. V.. "Monitoring Reactive Processes along the Extruder". International Polymer Processing 20 2 (2005): 121-127. http://dx.doi.org/10.3139/217.1871.
    10.3139/217.1871
  115. Duarte, F.M.; Barroso, V.C.; Maia, J.M.; Covas, J.A.. "A Computational Study on the Influence of the Rheological Behavior of Polystyrene and its Blends on their Thermoforming Ability". Journal of Polymer Engineering 25 2 (2005): http://dx.doi.org/10.1515/polyeng.2005.25.2.115.
    10.1515/polyeng.2005.25.2.115
  116. Covas, J.A.; Bernardo, C.A.; Carneiro, O.S.; Maia, J.M.; van Hattum, F.W.J.; Gaspar-Cunha, A.; Biró, L.P.; et al. "Continuous Production of Polycarbonate-Carbon Nanotube Composites". Journal of Polymer Engineering 25 1 (2005): http://dx.doi.org/10.1515/polyeng.2005.25.1.39.
    10.1515/polyeng.2005.25.1.39
  117. Berzin, F.; Vergnes, B.; Canevarolo, S. V.; Machado, A. V.; Covas, J. A.. "Evolution of the peroxide-induced degradation of polypropylene along a twin-screw extruder: Experimental data and theoretical predictions". Journal of Applied Polymer Science 99 5 (2005): 2082-2090. http://dx.doi.org/10.1002/app.22729.
    10.1002/app.22729
  118. Gaspar-Cunha, A.; Covas, J.A.; Vergnes, B.. "Defining the configuration of co-rotating twin-screw extruders with multiobjective evolutionary algorithms". Polymer Engineering & Science 45 8 (2005): 1159-1173. http://dx.doi.org/10.1002/pen.20391.
    10.1002/pen.20391
  119. Carneiro, O.S.; Covas, J.A.; Ferreira, J.A.; Cerqueira, M.F.. "On-line monitoring of the residence time distribution along a kneading block of a twin-screw extruder". Polymer Testing 23 8 (2004): 925-937. http://dx.doi.org/10.1016/j.polymertesting.2004.05.001.
    10.1016/j.polymertesting.2004.05.001
  120. Nóbrega, J. M.; Carneiro, O. S.; Covas, J. A.; Pinho, F. T.; Oliveira, P. J.. "Design of calibrators for extruded profiles. Part I: Modeling the thermal interchanges". Polymer Engineering & Science 44 12 (2004): 2216-2228. http://dx.doi.org/10.1002/pen.20249.
    10.1002/pen.20249
  121. Covas, J. A.; Gaspar-Cunha, A.. "Optimisation-based design of extruders". Plastics, Rubber and Composites 33 9-10 (2004): 416-425. http://dx.doi.org/10.1179/174328904x24920.
    10.1179/174328904x24920
  122. Covas, J.A; Costa, P. "A miniature extrusion line for small scale processing studies". Polymer Testing 23 7 (2004): 763-773. http://dx.doi.org/10.1016/j.polymertesting.2004.04.005.
    10.1016/j.polymertesting.2004.04.005
  123. Machado, Ana Vera; Gaspar-Cunha, António; Covas, José A.. "Modelling of the Grafting of Maleic Anhydride onto Polyethylene in an Extruder". Materials Science Forum 455-456 (2004): 763-766. http://dx.doi.org/10.4028/www.scientific.net/msf.455-456.763.
    10.4028/www.scientific.net/msf.455-456.763
  124. Machado, Ana Vera; Covas, José A.. "Effect of Experimental Conditions on the Grafting of Maleic Anhydride onto Polyethylene in Extruders". Materials Science Forum 455-456 (2004): 480-483. http://dx.doi.org/10.4028/www.scientific.net/msf.455-456.480.
    10.4028/www.scientific.net/msf.455-456.480
  125. Duarte, F. M.; Covas, J. A.. "On the Use of the Heating Stage to Control the Thickness Distribution in Thermoformed Parts". International Polymer Processing 19 2 (2004): 186-198. http://dx.doi.org/10.3139/217.1821.
    10.3139/217.1821
  126. Covas, J.A.; Carneiro, O.S.; Costa, P.; Machado, A.V.; Maia, J.M.. "Online monitoring techniques for studying evolution of physical, rheological and chemical effects along the extruder". Plastics, Rubber and Composites 33 1 (2004): 55-61. http://dx.doi.org/10.1179/146580104225018300.
    10.1179/146580104225018300
  127. Machado, A. V.; Covas, J. A.; van Duin, M.. "A study of grafting reactions during processing of polyolefins". Advances in Polymer Technology 23 3 (2004): 196-210. http://dx.doi.org/10.1002/adv.20011.
    10.1002/adv.20011
  128. Ito, E. N.; Pessan, L. A.; Covas, J. A.; Hage, E.. "Analysis of the Morphological Development of PBT/ABS Blends during the Twin Screw Extrusion and Injection Molding Processes". International Polymer Processing 18 4 (2003): 376-381. http://dx.doi.org/10.3139/217.1780.
    10.3139/217.1780
  129. Poulesquen, A.; Vergnes, B.; Cassagnau, P.; Michel, A.; Carneiro, O. S.; Covas, J. A.. "A study of residence time distribution in co-rotating twin-screw extruders. Part II: Experimental validation". Polymer Engineering & Science 43 12 (2003): 1849-1862. http://dx.doi.org/10.1002/pen.10157.
    10.1002/pen.10157
  130. van Duin, Martin; van Gurp, Marnix; Leemans, Luc; Walet, Monique; Aussems, Marcel; Martin, Philippe; Legras, Roger; Machado, Ana V.; Covas, Jose A.. "Interfacial chemistry and morphology of in-situ compatibilised PA-6 and PBT based blends". Macromolecular Symposia 198 1 (2003): 135-146. http://dx.doi.org/10.1002/masy.200350812.
    10.1002/masy.200350812
  131. Duarte, F. M.; Covas, J. A.. "Infrared sheet heating in roll fed thermoforming: Part 2 - Factors influencing inverse heating solution". Plastics, Rubber and Composites 32 1 (2003): 32-39. http://dx.doi.org/10.1179/146580103225009077.
    10.1179/146580103225009077
  132. Machado, A. V.; Maia, J. M.; Canevarolo, S. V.; Covas, J. A.. "Evolution of peroxide-induced thermomechanical degradation of polypropylene along the extruder". Journal of Applied Polymer Science 91 4 (2003): 2711-2720. http://dx.doi.org/10.1002/app.13476.
    10.1002/app.13476
  133. Covas, José A.; Carneiro, Olga S.; Maia, João M.; Filipe, Susana A.; Machado, Ana V.. "Evolution of Chemistry, Morphology and Rheology of Various Polymer Systems along a Twin-Screw Extruder". The Canadian Journal of Chemical Engineering 80 6 (2002): 1065-1074. http://dx.doi.org/10.1002/cjce.5450800608.
    10.1002/cjce.5450800608
  134. Carneiro, O. S.; Poulesquen, A.; Covas, J. A.; Vergnes, B.. "Visualisation and Analysis of the Flow along the Kneading Block of a Twin-screw Extruder". International Polymer Processing 17 4 (2002): 301-308. http://dx.doi.org/10.3139/217.1708.
    10.3139/217.1708
  135. Martins, M.; Covas, José A.. "Polymer Melt Flow through Channels with Vibrating Walls". Key Engineering Materials 230-232 (2002): 300-302. http://dx.doi.org/10.4028/www.scientific.net/kem.230-232.300.
    10.4028/www.scientific.net/kem.230-232.300
  136. Machado, A. V.; Covas, J. A.; Van Duin, M.. "Monitoring the evolution of the properties of PA-6/EPM-g-MA blends in a twin-screw extruder". Polymer Engineering & Science 42 10 (2002): 2032-2041. http://dx.doi.org/10.1002/pen.11094.
    10.1002/pen.11094
  137. Gaspar-Cunha, A.; Poulesquen, A.; Vergnes, B.; Covas, J. A.. "Optimization of Processing Conditions for Polymer Twin-Screw Extrusion". International Polymer Processing 17 3 (2002): 201-213. http://dx.doi.org/10.3139/217.1701.
    10.3139/217.1701
  138. Duarte, F. M.; Covas, J. A.. "IR sheet heating in roll fed thermoforming: Part 1 - Solving direct and inverse heating problems". Plastics, Rubber and Composites 31 7 (2002): 307-317. http://dx.doi.org/10.1179/146580102225006530.
    10.1179/146580102225006530
  139. Duarte, F. M.; Covas, J. A.. "IR sheet heating in roll fed thermoforming: Part 1 - Solving direct and inverse heating problems". Plastics, Rubber and Composites 31 7 (2002): 307-317. http://dx.doi.org/10.1179/146580102225006530.
    10.1179/146580102225006530
  140. Evstatiev, M.; Fakirov, S.; Krasteva, B.; Friedrich, K.; Covas, J. A.; Cunha, A. M.. "Recycling of poly(ethylene terephthalate) as polymer-polymer composites". Polymer Engineering & Science 42 4 (2002): 826-835. http://dx.doi.org/10.1002/pen.10994.
    10.1002/pen.10994
  141. Maia, J. M.; Carneiro, O. S.; Machado, A. V.; Covas, J. A.. "On-Line Rheometry for Twin-Screw Extrusion (Along the Extruder) and its Applications". Applied Rheology 12 1 (2002): 18-24. http://dx.doi.org/10.1515/arh-2002-0002.
    10.1515/arh-2002-0002
  142. Barroso, Vitor C.; Covas, José A.; Maia, João M.. "Sources of error and other difficulties in extensional rheometry revisited: commenting and complementing a recent paper by T. Schweizer". Rheologica Acta 41 1-2 (2002): 154-161. http://dx.doi.org/10.1007/s003970200014.
    10.1007/s003970200014
  143. Canevarolo, S. V.; Mélo, T. J. A.; Cavas, J. A.; Carneiro, O. S.. "Direct Method for Deconvolving Two Residence Time Distribution Curves". International Polymer Processing 16 4 (2001): 334-340. http://dx.doi.org/10.3139/217.1660.
    10.3139/217.1660
  144. Covas, J. A.; Carneiro, O. S.; Maia, J. M.. "Monitoring the Evolution of Morphology of Polymer Blends Upon Manufacturing of Microfibrillar Reinforced Composites". International Journal of Polymeric Materials 50 3-4 (2001): 445-467. http://dx.doi.org/10.1080/00914030108035119.
    10.1080/00914030108035119
  145. Gaspar-Cunha, A.; Covas, J. A.. "The Design of Extrusion Screws: An Optimization Approach". International Polymer Processing 16 3 (2001): 229-240. http://dx.doi.org/10.3139/217.1652.
    10.3139/217.1652
  146. van Duin, Martin; Machado, Ana Vera; Covas, Jose. "A look inside the extruder: evolution of chemistry, morphology and rheology along the extruder axis during reactive processing and blending". Macromolecular Symposia 170 1 (2001): 29-40. http://dx.doi.org/10.1002/1521-3900(200106)170:1<29::aid-masy29>3.0.co;2-4.
    10.1002/1521-3900(200106)170:1<29::aid-masy29>3.0.co;2-4
  147. Machado, A.V; Covas, J.A; van Duin, M. "Effect of polyolefin structrure on maleic anhydride grafting". Polymer 42 8 (2001): 3649-3655. http://dx.doi.org/10.1016/s0032-3861(00)00692-3.
    10.1016/s0032-3861(00)00692-3
  148. Machado, A. V.; Covas, J. A.; Van Duin, M.. "Monitoring polyolefin modification along the axis of a twin screw extruder. I. Effect of peroxide concentration". Journal of Applied Polymer Science 81 1 (2001): 58-68. http://dx.doi.org/10.1002/app.1413.
    10.1002/app.1413
  149. Machado, A. V.; Covas, J. A.; Walet, M.; Van Duin, M.. "Effect of composition and processing conditions on the chemical and morphological evolution of PA-6/EPM/ EPM-g-MA blends in a corotating twin-screw extruder". Journal of Applied Polymer Science 80 9 (2001): 1535-1546. http://dx.doi.org/10.1002/app.1245.
    10.1002/app.1245
  150. Covas, J.A; M. Nóbrega, J; M. Maia, J. "Rheological measurements along an extruder with an on-line capillary rheometer". Polymer Testing 19 2 (2000): 165-176. http://dx.doi.org/10.1016/s0142-9418(98)00086-5.
    10.1016/s0142-9418(98)00086-5
  151. Covas, J. A.; Machado, A. V.; Van Duin, M.. "Rheology of PA-6/EPM/EPM-g-MA blends along a twin-screw extruder". Advances in Polymer Technology 19 4 (2000): 260-276. http://dx.doi.org/10.1002/1098-2329(200024)19:4<260::aid-adv3>3.0.co;2-c.
    10.1002/1098-2329(200024)19:4<260::aid-adv3>3.0.co;2-c
  152. Machado, A. V.; van Duin, M.; Covas, J. A.. "Monitoring polyolefin modification along the axis of a twin-screw extruder. II. Maleic anhydride grafting". Journal of Polymer Science Part A: Polymer Chemistry 38 21 (2000): 3919-3932. http://dx.doi.org/10.1002/1099-0518(20001101)38:21<3919::aid-pola90>3.0.co;2-l.
    10.1002/1099-0518(20001101)38:21<3919::aid-pola90>3.0.co;2-l
  153. Carneiro, O. S.; Covas, J. A.; Vergnes, B.. "Experimental and theoretical study of twin-screw extrusion of polypropylene". Journal of Applied Polymer Science 78 7 (2000): 1419-1430. http://dx.doi.org/10.1002/1097-4628(20001114)78:7<1419::aid-app130>3.0.co;2-b.
    10.1002/1097-4628(20001114)78:7<1419::aid-app130>3.0.co;2-b
  154. Carneiro, O.S.; Caldeira, G.; Covas, J.A.. "Flow patterns in twin-screw extruders". Journal of Materials Processing Technology 92-93 (1999): 309-315. http://dx.doi.org/10.1016/s0924-0136(99)00168-5.
    10.1016/s0924-0136(99)00168-5
  155. Machado, A. V.; Covas, J. A.; Van Duin, M.. "Chemical and morphological evolution of PA-6/Epm/Epm-g-MA blends in a twin screw extruder". Journal of Polymer Science Part A: Polymer Chemistry 37 9 (1999): 1311-1320. http://dx.doi.org/10.1002/(sici)1099-0518(19990501)37:9<1311::aid-pola11>3.0.co;2-y.
    10.1002/(sici)1099-0518(19990501)37:9<1311::aid-pola11>3.0.co;2-y
  156. Covas, J.A.; Maia, J.M.. "Relationship between gelation and wall slip in unplasticised poly(vinyl chloride) compounds". Plastics, Rubber and Composites 28 4 (1999): 152-156. http://dx.doi.org/10.1179/146580199101540277.
    10.1179/146580199101540277
  157. Zouache, Djaafar; Ould Arby, Yahya; Nouioua, Farid; Ben Abdelaziz, Fouad. "Solving Extrusion Problems - Comparison Between Theoretical and Experimental Approaches". Polymer Engineering & Science 39 (1999): 443.
    Published • 10.1016/j.cie.2019.01.055
  158. Machado, A. V.; Covas, J. A.; Van Duin, M.. "Evolution of morphology and of chemical conversion along the screw in a corotating twin-screw extruder". Journal of Applied Polymer Science 71 1 (1999): 135-141. http://dx.doi.org/10.1002/(sici)1097-4628(19990103)71:1<135::aid-app16>3.0.co;2-m.
    10.1002/(sici)1097-4628(19990103)71:1<135::aid-app16>3.0.co;2-m
  159. Maia, J.M.; Covas, J.A.; Nóbrega, J.M.; Dias, T.F.; Alves, F.E.. "Measuring uniaxial extensional viscosity using a modified rotational rheometer". Journal of Non-Newtonian Fluid Mechanics 80 2-3 (1999): 183-197. http://dx.doi.org/10.1016/s0377-0257(98)00086-x.
    10.1016/s0377-0257(98)00086-x
  160. Cunha, A.. "Optimization of polymer extrusion with genetic algorithms". IMA Journal of Management Mathematics 9 3 (1998): 267-277. http://dx.doi.org/10.1093/imaman/9.3.267.
    10.1093/imaman/9.3.267
  161. Caldeira, G.; Maia, J. M.; Carneiro, O. S.; Covas, J. A.; Bernardo, C. A.. "Production and characterization of innovative carbon fiber-polycarbonate composites". Polymer Composites 19 2 (1998): 147-151. http://dx.doi.org/10.1002/pc.10085.
    10.1002/pc.10085
  162. Carneiro, O.S.; Covas, J.A.; Bernardo, C.A.; Caldeira, G.; Van Hattum, F.W.J.; Ting, J.-M.; Alig, R.L.; Lake, M.L.. "Production and assessment of polycarbonate composites reinforced with vapour-grown carbon fibres". Composites Science and Technology 58 3-4 (1998): 401-407. http://dx.doi.org/10.1016/s0266-3538(97)00138-3.
    10.1016/s0266-3538(97)00138-3
  163. Covas, José. "Optimisation of Single Screw Extrusion - Theoretical and Experimental Results". Int. J. Forming Processes 1 (1998): 323.
    Published
  164. Soares, B. G.; Barbosa, R. V.; Covas, J. C.. "Polystyrene/EVA melt blends compatibilized with EVA-graft-polystyrene". Journal of Applied Polymer Science 65 11 (1997): 2141-2149. http://dx.doi.org/10.1002/(sici)1097-4628(19970912)65:11<2141::aid-app10>3.0.co;2-6.
    10.1002/(sici)1097-4628(19970912)65:11<2141::aid-app10>3.0.co;2-6
  165. Covas, José. "Design and Assessment of Mandrel Pipe Dies". Plast. Rubb. Comp. Proc. & Appl 24 (1995): 79.
    Published
  166. Covas, J. A.; Silva, C. A.. "The effect of reprocessing on the properties of PVC". Journal of Vinyl and Additive Technology 15 3 (1993): 124-131. http://dx.doi.org/10.1002/vnl.730150304.
    10.1002/vnl.730150304
  167. Covas, J.A.. "The use of differential scanning calorimetry to study the reprocessing of poly(vinyl chloride)". Polymer 34 15 (1993): 3204-3208. http://dx.doi.org/10.1016/0032-3861(93)90391-m.
    10.1016/0032-3861(93)90391-m
  168. Covas, J. A.; Gilbert, M.. "Single screw extrusion of poly(vinyl chloride): Effect on fusion and properties". Polymer Engineering and Science 32 11 (1992): 743-750. http://dx.doi.org/10.1002/pen.760321106.
    10.1002/pen.760321106
  169. Covas, J.A.; Carneiro, O.S.. "Elasticity of poly(vinyl chloride) melts". Polymer 33 23 (1992): 4977-4982. http://dx.doi.org/10.1016/0032-3861(92)90048-2.
    10.1016/0032-3861(92)90048-2
  170. Covas, J. A.. "Optimizing the processing of rigid PVC compounds". Journal of Vinyl and Additive Technology 13 3 (1991): 123-129. http://dx.doi.org/10.1002/vnl.730130303.
    10.1002/vnl.730130303
  171. Covas, J.A.; Carneiro, O.S.; Brito, A.M.. "Designing Extrusion Dies for Thermoplastics". Journal of Elastomers & Plastics 23 3 (1991): 218-238. http://dx.doi.org/10.1177/009524439102300305.
    10.1177/009524439102300305
  172. Covas, J.A.; Carneiro, O.S.. "Assessing the convergent flow analysis as a technique for characterizing the extensional flow of polymer melts". Polymer Testing 9 3 (1990): 181-194. http://dx.doi.org/10.1016/0142-9418(90)90039-g.
    10.1016/0142-9418(90)90039-g
  173. Covas, José. "Twin Screw Extrusion of a Rigid PVC Compound - Effect of Processing Conditions on Fusion and Properties". Plast. Rubb. Proc. & Applic., 9 (1988): 107.
    Published
  174. Covas, José. "Hardness Measurement as a Technique for Assessing Gelation of Rigid PVC Compounds". Plast. Rubb. Proc. & Applic 9 (1988): 91.
    Published

Intellectual property

Patent
  1. Covas, José A. 2019. "Mecanismo de Ajuste do Cilindro Ajustável da Extrusora Monofuso". Portugal.
    Granted/Issued
  2. Covas, José A. 2019. ". Mecanismo de Plasticização da Extrusora". Portugal.
    Granted/Issued
  3. Covas, José A. 2018. "Mecanismo de Ajuste do Cilindro Ativo da Extrusora". Portugal.
    Granted/Issued
  4. Covas, José A. 2011. "Method For Preparing Coated Binder Units and Device For Use Therein". United States.
    Granted/Issued
  5. Covas, José A. 2011. "Method For Preparing Coated Binder Units and a System For Use Therein". United States.
    Granted/Issued
  6. Covas, José A. 2009. "Method For Preparing Coated Binder Units". United States.
    Granted/Issued
  7. Covas, José A. 2008. "On-line rotational/oscillatory rheometrical device". United States.
    Granted/Issued
  8. Covas, José A. 2005. "Micro-linha de extrusão". Portugal.
    Granted/Issued
  9. Covas, José A. 2005. "Dispositivo de reometria rotacional / oscilatória em linha". Portugal.
    Granted/Issued
  10. Covas, José A. 2004. "Laboratorial extrusion line for the production of conventional and bi-oriented tubular film, with simple commutation between the two techniques".
    Granted/Issued
  11. Covas, José A. 1999. "Dispositivo para recolha rápida de amostras de polímero de extrusoras".
    Granted/Issued
  12. Covas, José A. 1999. "Acessório Acoplável a Reómetro Rotacional para Medição de Propriedades Extensionais,". Portugal.
    Granted/Issued
  13. Covas, José A. 1999. "Acessório para Medição Rápida de Propriedades Reológicas durante o Processo de Extrusã". Portugal.
    Granted/Issued
Distinctions

Award

2020 33ième Prix Roberval dans la catégorie "Enseignement Supérieur
Lavoisier, France
2019 Gold Medal

Other distinction

2002 APDF
1988 E Gaspar Award