## Molecular basis of polymer networks: proceedings of the 5th IFF-Ill Workshop, Jülich, Fed. Rep. of Germany, October 5-7, 1988The contributors to this volume appraise our knowledge of the molecular physics of polymer networks and pinpoint areas of research where significant advances can be made using new theories and techniques. They describe both theoretical approaches, based on new theoretical concepts and original network models, and recent experimental investigations using SANS, 2H NMR or QELS. These new techniques provide precise information about network behaviour at the molecular level. Reported results of the application of these and more traditional techniques include the microscopic conformation and properties of permanent networks or gels formed by specific interchain interactions, the behaviour of elastomer liquid crystals, and the static and dynamic properties of star-branched polymers. |

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Page 77

The basic idea is that a network has a certain tendancy to expel chains which are

introduced inside if they are too long: their

with molecular weight, does not compensate then the elastic energy of ...

The basic idea is that a network has a certain tendancy to expel chains which are

introduced inside if they are too long: their

**entropy**of mixing, which decreaseswith molecular weight, does not compensate then the elastic energy of ...

Page 135

From the above discussion, it appears that between the dry state and the

equilibrium swollen state in a theta diluent, the dimensions of the individual

chains are the same. Thus the

coming from ...

From the above discussion, it appears that between the dry state and the

equilibrium swollen state in a theta diluent, the dimensions of the individual

chains are the same. Thus the

**entropy**contribution to the elastic free energycoming from ...

Page 172

i.e. the principal strains are Xj— 1 . and we have to calculate the new

this deformed state, but with the same crosslink positions. The

experimentally observed in the undeformed state is given by the general

expression [13,14] ...

i.e. the principal strains are Xj— 1 . and we have to calculate the new

**entropy**inthis deformed state, but with the same crosslink positions. The

**entropy**experimentally observed in the undeformed state is given by the general

expression [13,14] ...

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### Contents

Remarks | 2 |

Statistical Mechanics of dDimensional Polymer Networks and Exact | 17 |

FluctuationInduced Deformation Dependence of the FloryHuggins | 35 |

Copyright | |

12 other sections not shown

### Common terms and phrases

anisotropy Basis of Polymer Bastide behaviour blends calculated carrageenan chain segments Chem chemical chemical potential configuration conformation constant constraints corresponding crosslinking curves deformation density dependence deswelling deuterated deviatoric distribution dynamics Editors effect elastic free energy elementary strand elongation entanglements entropy equation equilibrium excluded volume experimental experiments exponent factor Flory Flory-Huggins fluctuations fractal dimension free chains free energy Gaussian gelation Gennes 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 polyelectrolyte Polymer Networks polymeric fractals polystyrene Proceedings in Physics properties radius of gyration ratio reptation rod network Rouse model rubber elasticity sample scaling solution solvent Springer Proceedings star molecules star polymers structure surface swelling swollen temperature theory topological uniaxial values vector viscoelastic viscosity volume fraction