Ln（acac）_3／BuMgCl催化聚合甲基丙烯酸甲酯、环氧丙烷和ε－己内酯

Polymerization of Methyl Methacrylate, Propylene Oxide and Caprolactone by Catalysts Ln(acac)_3/BuMgCl

Ｌｎ（ａｃａｃ）_３／ＢｕＭｇＣｌ催化聚合甲基丙烯酸甲酯、环氧丙烷和ε－己内酯孙俊全（浙江大学高分子科学与工程系杭州３１００２７）关键词甲基丙烯酸甲酯，环氧丙烷，ε－己内酯，稀土化合物，格氏试剂，配位催化剂，聚合反应在开拓稀土配位聚合反应的研究中，已?..

The polymerization of methyl methacrylate(MMA), propylene oxide(PO)and ε-caprolactone(ε-Cl)catalyzed by Ln(acac)_3/BuMgCl (Ln=Y, Nd, Sm)has been studied.The results show that the polymerization conversion of MMA in petroleum ether was higherthan that in aromatic hydrocarbons and polar solvents, and the polymerization conversion ofε-Cl in petroleum ether and toluene reached 100%. The molecular weight distribution param-eters of PMMA, PPO and P(ε-Cl)were 1.37,1. 39 and 2. 10 respectively.