一、前言环烯烃开环聚合是一类新型的聚合反应,已经证实,环烯烃在适宜的催化剂作用下发生开环聚合,既不是双键开裂相互加成,又不是C—C单键断裂开环,而是双键不断易位、环逐渐扩大。因此这类开环聚合本质上不同于开链烯烃的加成聚合和内酰胺、环醚、内酯等 I. Introduction Cycloalkene ring-opening polymerization is a new type of polymerization reaction. It has been confirmed that ring-opening polymerization takes place under the action of a suitable catalyst. It is neither double-bond cleavage nor double-cleavage of C-C bonds Ring, but the double bond constantly translocation, the ring gradually expanded. Thus, such ring-opening polymerizations are essentially different from the addition polymerization of open-chain olefins and the addition of lactams, cyclic ethers, lactones, etc.