Role of crystal-amorphous interaction in phase equilibria of crystal-amorphous polymer blends.
Role of crystal-amorphous interaction in phase equilibria of crystal-amorphous polymer blends.
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DOI：
10.1021/jp061159m
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发表时间：
2006-06
期刊：
影响因子：
--
通讯作者：
R. Matkar;T. Kyu
中科院分区：
文献类型：
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作者：
R. Matkar;T. Kyu
本文发展了一种自洽理论，用于测定结晶高分子溶液的相图。虽然原始的Flory稀释剂理论捕获液相线，但由于固体晶体中溶剂完全不可溶解的固有假设，该理论无法解释固相线。本理论考虑了所有可能的相互作用，包括非晶-非晶和晶体-非晶相互作用。自洽的解决方案预测各种相图，包括液-液，纯固体，液-固共存区的液相线和固相线的约束。在溶剂完全不溶于纯固体晶体的极限下，恢复了原来的Flory稀释剂理论。
A self-consistent theory has been developed for determination of phase diagrams of a crystalline polymer solution. Although the original Flory diluent theory captures the liquidus line, the theory is incapable of accounting for the solidus line due to the inherent assumption of complete immiscibility of solvent in the solid crystal. The present theory considers all possible interactions involving amorphous-amorphous and crystal-amorphous interactions. The self-consistent solutions predict various phase diagrams involving liquid-liquid, pure solid, and liquid-solid coexistence regions bound by liquidus and solidus lines. In the limit of complete insolubility of solvent in neat solid crystal, the original Flory diluent theory is recovered.