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Proprietes physico-chimiques de reseaux polymeriques modeles—I. Caracterisation des parametres de structure

✍ Scribed by F. Rietsch; D. Froelich

Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
679 KB
Volume
15
Category
Article
ISSN
0014-3057

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✦ Synopsis

Polystyrene gels were prepared by anionic copolymerization of styrene and divinylbenzene in dilute solution (7.5%), the molecular weight between crosslinks ranging from 6500 to 75,000. We have characterized the molecular parameters of the statistical theory: the number of elastic chains, the functionality of the crosslinks, the memory term and the Flory-Huggins interaction parameter. The results reveal a small influence of the crosslinks on these parameters without the memory term. and no influence of the swelling solvent.

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Proprietes physico-chimiques de reseaux
Proprietes physico-chimiques de reseaux polymeriques modeles—II. Influence de la temperature
✍ F. Rietsch; D. Froelich 📂 Article 📅 1979 🏛 Elsevier Science 🌐 English ⚖ 778 KB

Polystyrene sels were prepared by anionic copolymerization of styrene and divinylbenzene in dilute solution. There has been a study of the stress-birefringencc, as a function of temperature, of these networks swollen to equilibrium in cyclohexane and methylcyclohexane.