## 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 28

The free energy of deformation of the gel is obtained in terms of the Debye-

Huckel screening

gel. 1. Introduction Many important networks occurring in nature contain cross-

linked ...

The free energy of deformation of the gel is obtained in terms of the Debye-

Huckel screening

**length**, the number density of cross-links and the density of thegel. 1. Introduction Many important networks occurring in nature contain cross-

linked ...

Page 145

For a neutral gel at the swelling equilibrium concentration this screening

related to the raosh size of the network. At higher concentrations, { decreases as

the gel concentration increases. In the range of low a values : 0.6 10~2 < a < 2 ...

For a neutral gel at the swelling equilibrium concentration this screening

**length**isrelated to the raosh size of the network. At higher concentrations, { decreases as

the gel concentration increases. In the range of low a values : 0.6 10~2 < a < 2 ...

Page 189

This relation obviously depends on the approximations involved in the derivation

of the distribution functions. A Gaussian distribution [6] for the end-to-end

distance a+is obtained, if the

comparison to a ...

This relation obviously depends on the approximations involved in the derivation

of the distribution functions. A Gaussian distribution [6] for the end-to-end

distance a+is obtained, if the

**length**1 of the chain segments is small incomparison to a ...

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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