Design of Living Cationic Polymerization Systems Exploiting the Characteristics of Lewis Acid Catalysts

本研究的目的是利用Lewis酸催化剂的特性，建立可控阳离子聚合的新引发体系。主要成果如下：(1)阐明了Lewis酸的结构与阳离子聚合行为之间的关系；(2)开发了一种制备活性聚合金属络合物催化剂的简便方法；(3)不需要Lewis酸催化剂的活性阳离子聚合；(4)通过交叉传播反应实现了乙烯基单体与环状单体的共聚；(5)控制了烷氧基环氧烷的阳离子开环聚合。

The aim of this research was to establish new initiating systems for controlled cationic polymerizations by utilizing the characteristics of Lewis acid catalysts. The main achievements are as follows: (1) the elucidation of the relationship between the Lewis acids' structures and the cationic polymerization behaviors, (2) the development of a facile method that generates metal complex catalysts for living polymerization, (3) the living cationic polymerization that does not require Lewis acid catalysts, (4) the copolymerization of vinyl and cyclic monomers through crossover propagation reactions, and (5) the controlled cationic ring-opening polymerization of an alkoxyoxirane.