Molecular Basis of Polymer Networks: Proceedings of the 5th IFF-ILL Workshop, Jülich, Fed. Rep. of Germany, October 5–7, 1988Artur Baumgärtner, Claude E. Picot The workshop on the "Molecular Basis of Polymer Networks", held October 5- 7, 1988 in 1iilich, FRG, continued a series of workshops jointly organized by the Institute Laue Langevin (ILL) in Grenoble, and the Institute of Solid State Physics of the KFA, 1iilich. The aim of this workshop was to provide a platform for discussions between theoreticians and experimentalists interested in the physics of polymer networks, in the hope that the two types of discussion would be synergistic. As revealed by the title of this workshop, the main focus of the lectures was on molecular aspects of the problem. The individual parts of these proceedings cover various approaches. Following quite general comments from a physicist examining the situation from "outside", various new theoretical concepts are developed. During the last decade the advent of Small Angle Neutron Scattering (SANS) has allowed the molecular structure of polymer networks to be studied and thus the reliability of the theories to be tested directly at the molecular level. Recent advances in this field are presented. The use of new techniques such as 2H NMR or QELS and the refinements of more classical, mechanical experimental measure ments have provided new information about the relation between the macroscopic behavior and the microscopic structure of polymer networks. Some recent results in this area are discussed for both chemically cross-linked networks and gels built by specific interchain interactions. |
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Page 8
... Rouse model are not at all applicable to a gel or a melt . In spite of these inadequacies , results derived from this model are sometimes in good agreement with experiments . However , this fact is not a justification , and we can say ...
... Rouse model are not at all applicable to a gel or a melt . In spite of these inadequacies , results derived from this model are sometimes in good agreement with experiments . However , this fact is not a justification , and we can say ...
Page 90
... Rouse model also fits very accurately to the fine details of the master curves ( Fig . 3--5 ) , which on a semilogarithmic scale are bent in the case of pair correlations or coherent scattering ( Eq . ( 7 ) ) and straight in the case of ...
... Rouse model also fits very accurately to the fine details of the master curves ( Fig . 3--5 ) , which on a semilogarithmic scale are bent in the case of pair correlations or coherent scattering ( Eq . ( 7 ) ) and straight in the case of ...
Page 96
... model / 22 , 23 / . This model by James and Guth is the simplest and its formulation by Flory / 24 / is also the ... Rouse model , which does not take account of an explicit topological hindrance , but replaces all intermolecular ...
... model / 22 , 23 / . This model by James and Guth is the simplest and its formulation by Flory / 24 / is also the ... Rouse model , which does not take account of an explicit topological hindrance , but replaces all intermolecular ...
Contents
Remarks | 2 |
The BaumgärtnerMuthukumar Effect in Networks | 11 |
Statistical Mechanics of dDimensional Polymer Networks and Exact | 17 |
Copyright | |
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anisotropy Basis of Polymer Bastide Baumgärtner behaviour calculated carrageenan chain segments Chem chemical chemical potential concentration conformation constraints corresponding crosslinking curves deformation density dependence deswelling deuterated distribution dynamics Editors Edwards effect elastic free energy elementary strand elongation entanglements entropy equation equilibrium excluded volume experimental experiments exponent factor Flory Flory-Huggins Flory-Huggins theory fluctuations fractal dimension free chains free energy Gaussian gelation Gennes helix Herz increases interaction parameter isotropic labelled paths length linear Macromolecules macroscopic measurements melt modulus Molecular Basis molecular weight monomers network chains neutron scattering observed obtained P.G. de Gennes PDMS chains phantom network Phys Picot polybutadiene polyelectrolyte Polymer Networks polymeric fractals Proceedings in Physics radius of gyration ratio relaxation Rouse model rubber elasticity sample scaling solution solvent Springer Proceedings star molecules structure swelling swollen temperature theory topological uniaxial values vector Vilgis viscoelastic volume fraction