SHEAR-INDUCED PHASE-CHANGES IN POLYMER BLENDS

被引：52

作者：

KAMMER, HW

KUMMERLOEWE, C

KRESSLER, J

MELIOR, JP

机构：

[1] Department of Chemistry, University of Technology, 8027 Dresden

来源：

POLYMER | 1991年 / 32卷 / 08期

关键词：

POLYMER BLENDS; SHEAR-INDUCED PHASE CHANGES; COPOLYMERS; BINODALS; INTERACTION PARAMETERS; ELASTIC FREE ENERGY;

D O I：

10.1016/0032-3861(91)90431-H

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The phase behaviour of polymer blends exposed to shear is analysed in terms of a mean-field theory. One result of the theory is that shear-induced phase changes depend on the stored elastic excess energy. For a negative stored excess energy the miscibility region of the system is enlarged. The shift of the binodal for blends for poly(methyl methacrylate) and poly(styrene-co-acrylonitrile) undergoing shearing flow is determined by light-scattering experiments. It has been found for these blends that shear flow elevates phase-separation temperatures.

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页码：1488 / 1492

页数：5

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