## 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. |

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Page 187

A detailed examination of the computer simulation results , ( 4 ) , shows that the

average

increases , passing from a tensile

high ...

A detailed examination of the computer simulation results , ( 4 ) , shows that the

average

**force**in the covalent bonds decreases as the density p of the systemincreases , passing from a tensile

**force**at low density to a compressive**force**athigh ...

Page 189

As a consequence , the

chain fluctuate irregularly in time . The time average of this

a function of the extension of the chain . Calculations of stress - strain relations for

...

As a consequence , the

**forces**of constraint acting on the fixed end points of thechain fluctuate irregularly in time . The time average of this

**force**is calculated asa function of the extension of the chain . Calculations of stress - strain relations for

...

Page 192

3 Variation of the

Fig . 4 Time averaged

mobile mass points , ( b ) chain of 5 mobile mass points In Figs . 4a and 46 the

time ...

3 Variation of the

**force**f , with time . ( a ) a = 3 , ( b ) a = 3 . 9 - - 5 2 ( a ) ( b ) 6 0Fig . 4 Time averaged

**force**< f > as a function of the extension . ( a ) Chain of 3mobile mass points , ( b ) chain of 5 mobile mass points In Figs . 4a and 46 the

time ...

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### Contents

Remarks | 2 |

By S F Edwards With 1 Figure | 17 |

FluctuationInduced Deformation Dependence of the FloryHuggins | 35 |

Copyright | |

14 other sections not shown

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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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