Publications Peer-reviewed Literature

Scientific endeavor is about observation and experimentation in efforts to substantiate the validity of hypotheses that may reveal the workings of nature.

Browse the following collection of peer-reviewed papers on extrudate swell, fluid flow instabilities, rheology, self-assembling peptides, and surface topography, written or co-authored by Prof. Dr. R.J. Koopmans. Some of the papers are available to download as a pdf from our website. Alternatively, wherever possible, links are provided to view the abstract and purchase articles not available here.

The Characterisation of Newly Developed and Promising Hydrolyzed Ethylene Vinyl Acetate Copolymers R.J. Koopmans, R. van der Linden, E.F. Vansant, J.Adhesion, 11, 191, (1980). View Article
The Solubility Contours of Ethylene Vinyl Acetate and Ethylene Vinyl Alcohol Copolymers R.J. Koopmans, F. Vercauteren, R. van der Linden, E.F. Vansant, Plas. Rub. Proc. Appl., 2, 305, (1982).
Qualitative and Quantitative Infrared Spectrometry of Ethylene Vinylacetate Co-, Ethylene Vinylalcohol Co-, and Ethylene Vinylalcohol Vinylacetate Terpolymers R.J. Koopmans, R. van der Linden, E.F. Vansant, Spectros. Int. J., 1, 152, (1982).
Reactivity of Ethylene Vinyl Acetate Copolymers: A Critical Evaluation of the Comprehensive Patent Literature on the Acetoxy-hydroxide Transformation of Ethylene Vinyl Acetate Copolymers R.J. Koopmans, R. van der Linden, E.F. Vansant, Polym. Eng. Sci., 22, 645, (1982). View Article
Quantitative Determination of Vinylacetate Content in Ethylene Vinyl-Acetate Copolymers - A Critical Review R.J. Koopmans, R. van der Linden, E.F. Vansant, Polym. Eng. Sci., 22, 878, (1982). View Article
The Analysis of the Homogeneous Saponification method Applied to High-Pressure Ethylene Vinylacetate Copolymers.1. Kinetical Consideration R.J. Koopmans, R. van der Linden, E.F. Vansant, Bull. Soc. Chim. Belge, 91, 531, (1982). View Article
The Analysis of the Homogeneous Saponification method Applied to High-Pressure Ethylene Vinylacetate Copolymers.2. Influence of the Reaction Parameters on the Formation of EVAL/EVALVA Polymers R.J. Koopmans, R. van der Linden, E.F. Vansant, Bull. Soc. Chim. Belge, 92, 83, (1983). View Article
Quantitative Measurements of the Vinylacetate Content in High Pressure Ethylene Vinylacetate Copolymers R.J. Koopmans, R. Dommisse, R. van der Linden, E.F. Vansant, F. Alderweireldt, J. Adhesion, 15, 117, (1983). View Article
Reactivity Differences Between Isolated and Vicinal Vinyl-Acetate Functions in High Pressure Ethylene Vinyl-Acetate Co-Polymers R.J. Koopmans, R. Dommisse, F. Alderweireldt, R. van der Linden, E.F. Vansant, Eur. Polym. J., 19, 165, (1983). View Article
Physical Properties of High-Pressure Ethylene Vinylacetate Copolymers and Their Saponified Derivatives R.J. Koopmans, R. van der Linden, E.F. Vansant, Polym. Eng. Sci., 23, 306, (1983). View Article
Die Swell Dependence of Molecular Structure for Linear Polyethylene R.J. Koopmans, J. Polym. Sci., A, 26, 1157, (1988). View Article
Long-Chain Branching Determination in Irradiated Linear Low-Density Polyethylene B.D. Dickie, R.J. Koopmans, J. Polym. Sci., C, 28, 193, (1990). View Article
Extrudate Swell of HDPE: Part I: Aspects of Molecular Structure and Rheological Characterisation Methods R.J. Koopmans, Polym. Eng. Sci., 32, 1741, (1992). View Article
Extrudate Swell of HDPE: Part II: Time Dependency and Effects of Cooling and Sagging R.J. Koopmans, Polym. Eng. Sci., 32, 1750, (1992). View Article
Extrudate Swell of HDPE: Part III: Extrusion Blow Moulding Die Geometry Effects R.J. Koopmans, Polym. Eng. Sci., 32, 1755, (1992).
Modelling Polymer Melt Flow Instabilities J. Molenaar, R.J. Koopmans, J. Rheology, 38, 99, (1994). View Article
Experimental Study and Modeling of Oscillating Flow of High-Density Polyethylene V.Durand, B. Vergnes, J.-F Agassant, E. Benoit, R.J. Koopmans, J. Rheology, 383, 40 (1996). View Article
The sharkskin effect in polymer extrusion R.J. Koopmans, J. Molenaar, Polym. Eng. Sci., 38, 101, (1998). View Article
Onset of the sharkskin phenomenon in polymer extrusion J. Molenaar, R.J. Koopmans, C.F.J. Den Doelder, Physical Review E, 58 (4), 4683, (1998). View Article
Comparing the wall slip and the constitutive approach for modeling spurt instabilities in polymer melt flows C.F.J. Den Doelder, R.J. Koopmans, J. Molenaar, A.A.F. Van de Ven, J. Non-Newtonian Fluid Mechanics, 75, 25, (1998). View Article
Quantitative modelling of HDPE spurt experiments using wall slip and generalised Newtonian flow C.F.J. Den Doelder, R.J. Koopmans, J. Molenaar, J. Non-Newtonian Fluid Mechanics, 79, 503, (1998). View Article
Development of High Quality LLDPE and Optimised Processing for Film Blowing. Int. Polym. Process B. Debbaut, A. Goublomme, O. Homerin, R. Koopmans, D. Liebman, J. Meissner, B. Schroeter, B. Reckmann, T. Daponte, P.Verschaeren, J.-F. Agassant, B. Vergnes, C. Venet,XIII, 262, (1998). View Article
Modeling foam growth in thermoplastics R.J. Koopmans, C.F.J. de Doelder, A.N. Paquet, Advanced Materials, 12, 1873-1180, (2000). View Article
The matching of experimental polymer processing flows to viscoelastic numerical simulation Agassant, J.F, Baaijens, F., Bastian, H., Bernnat, A., Bogaerds, A.C.B., Coupez, T., Debbaut, B., Gavrus, A.L., Goublomme, A., Van Gurp, M., Koopmans, R.J., Laun, H.M., Lee, K., Nouatin, O.H., Macjley, M.R., Peters, G.W.M., Rekers, G., Verbeeten, W.H.M., Vergnes, B., Wagner, M.H., Wassner, E., Zoetelief, W. Int. Polym, Process., XVII, 3-10, (2002). View Article
Modelling foam growth in Semi-crystalline Thermoplastics C.F.J. de Doelder, R.L. Sammler, R.J. Koopmans, A.N. Paquet, Cellular Plastics, 21, 99, (2002). View Article
Pressure oscillations and periodic extrudate distortions of long-chain branched polyolefins C.F.J. den Doelder, R.J. Koopmans, M. Dees, M. Mangnus, J. Rheology, 49, 113, (2005). View Article
New supramolecular crystalline structure of syndiotactic polystyrene M. van Heeringen, B. Vastenhout, R. Koopmans, L. Aerts, e-Polymers, 48, (2005). View Article
Sustainable materials: R&D challenges for the 21st century R.J. Koopmans, SoftMatter, 2, 537, (2006). View Article
Free-surface thin-film flows over topography: Influence of inertia and viscoelasticity S. Saprykin, R.J. Koopmans, S. Kalliadasis, J. Fluid Mechanics, 578, 271, (2007). View Article
Free-surface thin-film flows over uniformly heated topography S. Saprykin, P.M.J. Trevelyan, R.J. Koopmans, S. Kalliadasis, Phys. Rev. E, 75, 2, 6306, (2007). View Article
Peptide aerogels comprising self-assembling nanofibrils S. Scanlon, A. Aggeli, N. Boden, R. Koopmans, R. Brydson and C.M. Rayner, Micro & Nano Letters, 2, (2), 24, (2007). View Article
The effect of molar mass distribution on extrudate swell of linear polymers C.F.J den Doelder, R.J. Koopmans,J. Non-Newtonian Fluid Mechanics, 152 (1-3), 195-202 (2008). View Article
Sustainable technologies for innovative materials, Plastics, Rubber and Composites R.J. Koopmans, 37 (2,3,4), 174-183, (2008). View Article
Directed organization of self-assembling peptide nanostructures into macroscopically ordered lamella-like layers by ice-crystallisation S. Scanlon, A. Aggeli, N. Boden, T.C.B. McLeish, P.Hine, R. Koopmans, C. Crowder,Soft Matter, 5, 1237-1246, (2009). View Article
Bioproduction of a pH responsive self-assembling peptide J. Riley, A. Aggeli, R. J. Koopmans, M. McPherson, Biotechnology & Bioengineering 103(2), 241-251, (2009). View Article
"Nanobiotechnology – Qua-vadis?", Current Opinions in Microbiology R.J. Koopmans, A. Aggeli, Elsevier, 13, 327-334, (2010). View Article
Stimuli-responsive gels as reaction vessels and reusable catalysts D. Diaz, D. Kuehbeck, R.J. Koopmans, Chemical Society reviews, 40(1), 427-448, (2011). View Article
A new look at extensional rheology of low-density polyethylene Q. Huang, M. Mangnus, R.J. Koopmans, O. Hassager, Rheologica Acta, 55(5), 343-350, (2016). View Article
Predicting bio-inspired candidate surfaces with superomniphobic characteristics N. Lempesis, A. Janka, O. Gnatiuk, S. van Eijndhoven, R. Koopmans, Surface topography: metrology and properties, 8, 025021, (2020). View Article
Extension and validation of a revised Cassie-Baxter model for tailor-made surface topography design and controlled wettability N. Lempesis, R. Koopmans, R. Díez-Ahedo, P-M. Kristiansen, Surface Topography: Metrology and Properties, 9, (2021). View Article