ON THE THERMODYNAMIC TREATMENT OF POLY(VINYLIDENE FLUORIDE) POLYSTYRENE BLEND UNDER LIQUID-LIQUID PHASE-SEPARATION CONDITIONS

被引：28

作者：

GOMEZ, CM ^{[1
]}

VERDEJO, E ^{[1
]}

FIGUERUELO, JE ^{[1
]}

CAMPOS, A ^{[1
]}

SORIA, V ^{[1
]}

机构：

[1] UNIV VALENCIA,DEPT QUIM FIS,E-46100 BURJASSOT,SPAIN

来源：

POLYMER | 1995年 / 36卷 / 07期

关键词：

POLY(VINYLIDENE FLUORIDE); POLYSTYRENE; PHASE SEPARATION;

D O I：

10.1016/0032-3861(95)95928-T

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

This paper deals with experimental and theoretical investigations on the compatibility of binary polymer blends in solution. The experimental phase boundary of a crystalline polymer such as poly(vinylidene fluoride) with polystyrene (an amorphous polymer) in dimethylformamide as solvent has been determined by size-exclusion chromatography at 25-degrees-C. The composition of the coexisting phases has been used to calculate interaction parameters by means of the Flory-Huggins-type function for the free energy of mixing, including composition dependence of the polymer-polymer interaction parameter and a first correction term denoted as ternary interaction parameter. The calculation of these parameters involves the solution of a system of equations that should be equal to the number of unknown parameters. Diverse approximations have been proposed in order to reduce the number of equations to be solved; they are mainly concerned with the composition dependence of both binary polymer-polymer and ternary interaction parameters and of their derivatives.

引用

页码：1487 / 1498

页数：12

共 67 条

[1] PREFERENTIAL ADSORPTION ONTO POLYSTYRENE IN MIXED-SOLVENT SYSTEMS [J].