摘要 离子液体除了是许多聚合物的良溶剂外，对聚合物的相转变也有一定的影响。综述了国内外关于离子液体对聚合物相转变影响的研究现状，包括玻璃化转变、结晶、凝胶等。离子液体对许多聚合物表现出增塑作用，显著降低了聚合物的玻璃化转变温度，甚至熔点。另外，离子液体能够促进蛋白质等聚合物结晶结构的形成。在离子液体作用下，聚甲基丙烯酸甲酯的立构混合物形成了可逆性热凝胶。
关键词 离子液体 聚合物 玻璃化转变 结晶 凝胶 Progress in Research on Effect of Ionic Liquids on Phase Transition of Polymers
WANG Xiao, CHEN Ye, ZHU Tianxiang, ZHANG Yumei, WANG Huaping
(State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620)
Abstract Ionic liquids not only are the good solvents for many polymers, but also have effect on the phase transition ofpolymers. In this paper, the effect of ionic liquids on the phase transition of polymers, including glass transition, crystallization and gelatin is reviewed. Ionic liquids can plasticize many polymers, and then decrease the glass transition temperature, even the melti-ng point. In addition, ionic liquids can promote the formation of crystallization of polymers, such as proteins; under the action ofionic liquids, the stereocomplex of poly (methyl methacrylate) can form thermoreversible gels.
Key words ionic liquids, polymers, glass transition, crystallization, gelatin