PHASE-BEHAVIOR OF BINARY-MIXTURES CONTAINING A SELF-ASSOCIATING POLYMER

被引:2
|
作者
SIKORA, A [1 ]
KARASZ, FE [1 ]
机构
[1] UNIV MASSACHUSETTS,DEPT POLYMER SCI & ENGN,AMHERST,MA 01003
关键词
D O I
10.1021/ma00065a030
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A simple association model has been developed and used to calculate the phase diagrams of a self-associating block copolymer/inert homopolymer mixture. It is shown that in this type of system a closed immiscibility regime can be observed, even in mixtures without strong specific interactions. A comparison of the model phase diagrams with the known phase diagram of a mixture of the block copolymer poly(styrene-co-butadiene) and polystyrene is satisfactory and leads to the suggestion that in this system a closed immiscibility regime is possible at higher temperatures and a noncritical-critical ''sideways coalescence'' of two miscibility gaps can occur.
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收藏
页码:3438 / 3443
页数:6
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