The results of phase equilibrium studies in mixtures of semicrystalline polymers with low-molecular-mass compounds are summarized and analyzed. A new classification of phase diagrams for such mixtures is proposed. Alternative points of view on the phase composition of semicrystalline polymers are presented. The phase structure evolution during the thermally induced phase separation of mixtures is monitored and the morphology of the forming capillary porous bodies as precursors of polymeric membranes is described. The general regularities concerning the influence of the nature of mixture components, polymer molecular mass, temperature scanning rate and other factors on the topology of phase diagrams are considered. Experimental methods used to construct the phase diagrams of mixtures and to study features of their phase structure are compared.

The bibliography includes 203 references.

总结和分析了半结晶聚合物与低分子量化合物混合物的相平衡研究结果。提出了这种混合物的相图的新分类。提出了关于半结晶聚合物相组成的不同观点。监测混合物的热致相分离过程中的相结构演变，并描述了作为聚合物膜前体形成的毛细管多孔体的形态。考虑了混合物组分性质、聚合物分子质量、温度扫描速率等因素对相图拓扑结构影响的一般规律。比较了用于构建混合物相图和研究其相结构特征的实验方法。

参考书目包括 203 篇参考文献。