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Dynamic rheological properties of polyisobutylene

✍ Scribed by A. N. Dunlop; H. Leverne Williams

Publisher
John Wiley and Sons
Year
1976
Tongue
English
Weight
584 KB
Volume
20
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

The viscoelastic properties of polyisobutylene melts were investigated as functions of temperature, molecular weight, and molecular weight distribution. The effect of molecular weight distribution was studied through the use of blends of narrow distribution polymers. The Ninomiya and Ferry theory was used successfully to predict the viscosity of the blends. It was observed that the temperature coefficient for flow was independent of molecular weight distribution and of molecular weight. It was shown, at least in the case of polyisobutylene melts, that the temperature dependence of elasticity is less for polymers with greater polydispersity.

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