环氧乙烷和环氧丙烷开环聚合

Ring-Opening Polymerization of Ethylene Oxide and Propylene Oxide

环氧乙烷和环氧丙烷的开环聚合产物在表面活性剂工业和聚氨酯工业得到了极为广泛的应用。本文综述了近几年来发展的用于环氧乙烷和环氧丙烷开环聚合的各类催化剂体系,分别讨论了各类催化剂体系对环氧乙烷和环氧丙烷的不同作用机制,考察了反应物结构对反应活性和选择性的影响,重点介绍了配位络合催化剂体系在环氧乙烷和环氧丙烷开环聚合反应中的应用,并指出了今后研究的方向。

Polyether （primarily homopolymers and copolymers of ethylene oxide and propylene oxide） which has the properties of excellent surface activity, flexibility of hydrophile-lipophile balance （HLB） and low toxicity has been widely used in sudactant and polyurethane industries. The progress in the catalytic ring-opening polymerization of ethylene oxide and propylene oxide is reviewed in this paper. The different catalytic mechanisms of cationic catalysts, anionic catalysts and coordination catalysts are discussed respectively. The application of coordination catalysts in the catalytic ringopening polymerization is intensively introduced and the further research trends are pointed out.