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 200
... star - branched polyethylene molecules , with arm numbers f ranging from 2 to 18 , by small - angle ncutron scattering . Measurements were made in the melt at a temperature of 140 ° C , and in dilute solution with a theta solvent ...
... star - branched polyethylene molecules , with arm numbers f ranging from 2 to 18 , by small - angle ncutron scattering . Measurements were made in the melt at a temperature of 140 ° C , and in dilute solution with a theta solvent ...
Page 206
... star polymers of different functionality and molecular weight . By partial deuteration it was possible to investigate also the structure and dynamics of designated parts of these molecules . In all cases a strong relation between star ...
... star polymers of different functionality and molecular weight . By partial deuteration it was possible to investigate also the structure and dynamics of designated parts of these molecules . In all cases a strong relation between star ...
Page 217
... Star molecules with non - interacting arms In order to calculate the statistical properties of the star molecules we must further specify the Boltzmann factors gk and the combinatorial factors v . In this section we consider the case in ...
... Star molecules with non - interacting arms In order to calculate the statistical properties of the star molecules we must further specify the Boltzmann factors gk and the combinatorial factors v . In this section we consider the case in ...
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