α,α’-邻二甲苯基桥联二茂基钐(Ⅱ)配合物对聚ε-己内酯进行开环聚合机理的研究  

Ring-opening polymerization of poly(ε-caprolactone) with α,α’-o-dimethylphenyl bridged dicyclopentadienyl samarium(Ⅱ) complex

作　　者：康永 Kang Yong(Yulin Hanting Chemical Technology Development Co.LTD.,Yulin 718100,Shaanxi,China)

机构地区：[1]榆林市瀚霆化工技术开发有限公司,陕西榆林718100

出　　处：《橡塑技术与装备》2019年第12期17-24,共8页China Rubber/Plastics Technology and Equipment

摘　　要：茂金属化合物中两个茂环可以通过一个或两个桥基相连接,形成桥联茂金属催化剂。本文通过合成新型茂金属α,α'-邻二甲苯基桥联二茂基钐(Ⅱ)配合物,考察对其ε-己内酯进行开环聚合的研究。实验结果显示,此新型催化剂具有很高的催化活性,在单体/催化剂用量(mol)为3000时仍有催化活性,聚合物的分子量高达35万,此催化剂的催化活性及所得聚合物分子量都比目前所报道的高。Two cyclopentadiene rings in metallocene compounds can be linked by one or two bridging bases to form bridged metallocene catalysts. In this paper,α,α'-o-dimethylphenyl bridged dicyclopentadienyl samarium(Ⅱ) complex has been synthesized. The ring opening polymerization of poly (ε-caprolactone) is investigated. The experimental results show that the new catalyst has high catalytic activity. It still has catalytic activity when mol of monomer/catalyst is 3000. The molecular weight of the polymer is up to 350,000. The catalytic activity and molecular weight of the catalyst are higher than those reported at present.

关 键 词：茂金属催化剂 开环聚合 催化活性 分子量 

分 类 号：TQ323.2[化学工程—合成树脂塑料工业]