Rheology for polymer melt processing [recurso electrónico

This book presents the main results obtained by different laboratories involved in the research group Rheology for polymer melt processing which is associated with French universities, schools of engineering, and the CNRS (Centre National de la Recherche Scientifique - France). The group comprises some 15 research laboratories of varied disciplines (chemistry, physics, material sciences, mechanics, mathematics), but with a common challenge viz. to enhance the understanding of the relationships between macromolecular species, their rheology and their processing. Some crucial issues of polymer science have been addressed: correlation of viscoelastic macroscopic bulk property measurements and models, slip at the wall, extrusion defects, correlation between numerical flow simulations and experiments. Features of the book: • The book is unique in that it allows one to grasp the key issues in polymer rheology and processing at once through a series of detailed state-of-the-art contributions, which were previously scattered throughout the literature. • Each paper was reviewed by experts and the book editors and some coordination was established in order to achieve a readable and easy access style. • Papers have been grouped in sections covering successively: Molecular dynamics, Constitutive equations and numerical modelling, Simple and complex flows. • Each paper can be read independently. Since the book is intended as an introduction to the main topics in polymer processing, it will be of interest to graduate students as well as to scientists in academic and industrial laboratories. Content: Preface Pages v-vi J.M. Piau, J.F. Agassant The reptation model: tests through diffusion measurements in linear polymer melts Original Research Article Pages 1-16 L. Leger, H. Hervet, P. Auroy, E. Boucher, G. Massey Polybutadiene: NMR and temporary elasticity Original Research Article Pages 17-36 J.P. Cohen Addad Chain relaxation processes of uniaxially stretched polymer chains: an infrared dichroism study Original Research Article Pages 37-63 J.F. Tassin, L. Bokobza, C. Hayes, L. Monnerie Chain conformation in elongational and shear flow as seen by SANS Original Research Article Pages 65-94 R. Muller, C. Picot Molecular Rheology and linear viscoelasticity Original Research Article Pages 95-139 G. Marin, J.P. Montfort Experimental validation of non linear network models Original Research Article Pages 141-198 Christian Carrot, Jacques Guillet, Pascale Revenu, Alain Arsac Mathematical analysis of differential models for viscoelastic fluids Original Research Article Pages 199-236 J. Baranger, C. Guillopé, J.-C. Saut Computation of 2D viscoelastic flows for a differential constitutive equation Original Research Article Pages 237-255 Y. Demay Validity of the stress optical law and application of birefringence to polymer complex flows Original Research Article Pages 257-284 R. Muller, B. Vergnes Comparison between experimental data and numerical models Original Research Article Pages 285-336 J. Guillet, C. Carrot, B.S. Kim, J.F. Agassant, B. Vergnes, C. Béraudo, J.R. Clermont, M. Normandin, Y. Béreaux Slip at the wall Original Research Article Pages 337-355 L. Léger, H. Hervet, G. Massey Slip and friction of polymer melt flows Original Research Article Pages 357-388 N. El Kissi, J-M. Piau Stability phenomena during polymer melt extrusion Original Research Article Pages 389-420 N. El Kissi, J-M. Piau Subject index Pages 421-424 This book presents the main results obtained by different laboratories involved in the research group Rheology for polymer melt processing which is associated with French universities, schools of engineering, and the CNRS (Centre National de la Recherche Scientifique - France). The group comprises some 15 research laboratories of varied disciplines (chemistry, physics, material sciences, mechanics, mathematics), but with a common challenge viz. to enhance the understanding of the relationships between macromolecular species, their rheology and their processing. Some crucial issues of polymer science have been addressed: correlation of viscoelastic macroscopic bulk property measurements and models, slip at the wall, extrusion defects, correlation between numerical flow simulations and experiments. Features of the book: & bull; The book is unique in that it allows one to grasp the key issues in polymer rheology and processing at once through a series of detailed state-of-the-art contributions, which were previously scattered throughout the literature. & bull; Each paper was reviewed by experts and the book editors and some coordination was established in order to achieve a readable and easy access style. & bull; Papers have been grouped in sections covering successively: Molecular dynamics, Constitutive equations and numerical modelling, Simple and complex flows. & bull; Each paper can be read independently. Since the book is intended as an introduction to the main topics in polymer processing, it will be of interest to graduate students as well as to scientists in academic and industrial laboratories