DEFINITION OF NONEQUILIBRIUM CHEMICAL-POTENTIAL - PHASE-SEPARATION OF POLYMERS IN SHEAR-FLOW

被引：32

作者：

CRIADOSANCHO, M ^{[1
]}

JOU, D ^{[1
]}

CASASVAZQUEZ, J ^{[1
]}

机构：

[1] UNIV AUTONOMA BARCELONA,DEPT FIS FIS ESTADIST,E-08193 BARCELONA,SPAIN

来源：

MACROMOLECULES | 1991年 / 24卷 / 10期

关键词：

D O I：

10.1021/ma00010a030

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 definition of a chemical potential in nonequilibrium situations raises a problem about the quantities to be held fixed during the differentiation of the generalized Gibbs free energy. In this paper we compare two different definitions of the nonequilibrium chemical potential of polymers under shear flow, starting from the experimental data by Rangel-Nafaile et al. concerning phase-separation experiments, under shear. The definition at fixed shear viscous pressure turns out to be more suitable than the definition at fixed conformation proposed previously in the literature by some authors.

引用

页码：2834 / 2840

页数：7

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