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.
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页码：357 / 364
页数：8
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