THE EFFECT OF SUPERCRITICAL CARBON-DIOXIDE ON POLYMER-SOLVENT MIXTURES

被引：18

作者：

KIAMOS, AA ^{[1
]}

DONOHUE, MD ^{[1
]}

机构：

[1] JOHNS HOPKINS UNIV,DEPT CHEM ENGN,BALTIMORE,MD 21218

来源：

MACROMOLECULES | 1994年 / 27卷 / 02期

关键词：

641.1 Thermodynamics - 801.4 Physical Chemistry - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 815.1.1 Organic Polymers;

D O I：

10.1021/ma00080a007

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 high-pressure phase behavior of polymer-solvent-supercritical carbon dioxide systems was investigated experimentally The polymers used were poly(methyl methacrylate), polystyrene, polybutadiene, and poly(vinyl ethyl ether) at concentrations ranging from 5 to 10% in mixtures with toluene or tetrahydrofuran. The experiments were conducted for temperatures from 25 to 70 degrees C and pressures up to 2200 psia in a high-pressure cell. The effect of the nature of the solvent on the L-LL phase transition was determined. Specifically, interest is focused on the effect of the supercritical carbon dioxide concentration on the mixture phase boundaries.

引用

页码：357 / 364

页数：8

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