## Molecular Basis of Polymer Networks: Proceedings of the 5th IFF-ILL Workshop, Jülich, Fed. Rep. of Germany, October 5–7, 1988The 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. |

### From inside the book

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Page 7

Figures ( a ) and ( b ) represent two states of the same square network . Folding

can also be disordered . 10 . Entanglements , Stress Points and Cooperative

Effects We know very little about the topological

network ...

Figures ( a ) and ( b ) represent two states of the same square network . Folding

can also be disordered . 10 . Entanglements , Stress Points and Cooperative

Effects We know very little about the topological

**constraints**which exist in anetwork ...

Page 102

given by ( 1 ) has to be modified in a manner depending on the degree of

...

given by ( 1 ) has to be modified in a manner depending on the degree of

**constraints**present in the real network structure . In the work of FLORY / 11 / the**constraints**were assumed to act only at the junction points . This assumption was...

Page 179

In addition , the hii ' s are not independent , but are subjected to a flux

zL ; hij = zL ; Àji · ( 1 ) The total number of possible paths from layer i to j , must be

the same as that from layer j to i . The flux

In addition , the hii ' s are not independent , but are subjected to a flux

**constraint**:zL ; hij = zL ; Àji · ( 1 ) The total number of possible paths from layer i to j , must be

the same as that from layer j to i . The flux

**constraint**( 1 ) relates the lambda ...### What people are saying - Write a review

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### Contents

Remarks | 2 |

Statistical Mechanics of dDimensional Polymer Networks and Exact | 17 |

FluctuationInduced Deformation Dependence of the FloryHuggins | 35 |

Copyright | |

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### Other editions - View all

Molecular Basis of Polymer Networks: Proceedings of the 5th IFF-ILL Workshop ... Artur Baumgärtner,Claude E. Picot No preview available - 2011 |

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appear approximation arms assumed average behaviour bonds calculated Chem chemical compared components concentration conformation connected considered constant constraints containing contribution correlations corresponding crosslinking curves deformation density dependence described deuterated dimension direction discussed distance distribution dynamics Edwards effect elastic equation equilibrium expected experimental experiments exponent expression factor Figure Flory fluctuations force fractal fraction free energy function given gives increases interaction labelled larger leads length limit linear Macromolecules mean measurements mechanical melt method modulus molecular weight molecules motion network chains neutron Note observed obtained orientation parameter paths PDMS Phys Physics Polymer Networks predictions present probability properties range ratio reduced reference relaxation respect rods rubber sample scaling scattering segment shown shows simple solution solvent Springer star stress structure studied surface swelling swollen temperature theory transition values volume