文献类型：期刊文献

中文题名：Polymerization of MMA catalyzed by different novel mixed ligand lanthanocene{(Cp)(Cl) LnSchiff-base (THF)},(COT) -Ln(methoxyethylindenyl)(THF) /Al (i -Bu)3 systems

英文题名：Polymerization of MMA catalyzed by different novel mixed ligand lanthanocene{(Cp)(Cl) LnSchiff-base (THF)},(COT) -Ln(methoxyethylindenyl)(THF) /Al (i -Bu)_3 systems

作者：尤赛夫.穆罕默德[1];黄吉玲[1];冯作锋[1];钱延龙[1];孙俊全[2];潘智达[2]

机构：[1]Laboratory of Organometallic Chemistry,East China University of Science and Technology,Shanghai 200237,China;[2]Material and Chemical Engineering College ,Zhejiang University,Hangzhou,Zhejiang 310027, China

年份：2000

卷号：18

期号：5

起止页码：759

中文期刊名：Chinese Journal of Chemistry

外文期刊名：中国化学（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2011_2012】；

基金：Project supported by the National Natural Science Foundation of China;Sino-Pectroleum Company (No. 29734145), the National Natural Science Foundation of China (No. 29871919).

语种：中文

中文关键词：MMA;polymerization;novel mked ligand lan-thanocene complexes

外文关键词：MMA, polymerization, novel mked ligand lan-thanocene complexes

摘要：This article deals that the rare earth metal complexes along with Al(i'-Bu),can catalyze the polymerization of methyl-methacrylate (MMA) into high molecular weight poly(MMA) along with narrow molecular weight distributions (MWD).A typical example was mentioned in the case of {Cp(Cl) Sm-Schiff-base(THF)} which expresses maximum (conv.% = 55.46 and Mn=354×103) efficiency along with narrow MWD (Mw/Mn<2) at 60℃.The resulting polymer was partially syndiotactic (>60%).The effect of the catalyst,temperature,catalyst/MMA molar ratio,catalyst/Al( i-Bu)3 molar ratio on the polymerization of MMA at 60℃ were also investigated.
This article deals that the rare earth metal complexes along with Al(i'-Bu),can catalyze the polymerization of methyl-methacrylate (MMA) into high molecular weight poly(MMA) along with narrow molecular weight distributions (MWD).A typical example was mentioned in the case of {Cp(Cl) Sm-Schiff-base(THF)} which expresses maximum (conv.% = 55.46 and Mn=354×103) efficiency along with narrow MWD (Mw/Mn<2) at 60℃.The resulting polymer was partially syndiotactic (>60%).The effect of the catalyst,temperature,catalyst/MMA molar ratio,catalyst/Al( i-Bu)3 molar ratio on the polymerization of MMA at 60℃ were also investigated.