二氧化硅负载[C_5Me_5]_2SmMe(THF)引发甲基丙烯酸甲酯聚合  

Polymerization of Methyl Methacrylate Initiated by Silica Supported [C_5Me_5]_2SmMe(THF)

作　　者：张一烽[1] 倪旭峰[1] 沈之荃[1] Yasuda Hajime 

机构地区：[1]浙江大学高分子科学研究所,杭州310027 [2]广岛大学工学部

出　　处：《高等学校化学学报》2001年第10期1778-1779,共2页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 99740 2 4);日本学术振兴会共同资助项目 (批准号 :2 0 0 11894)资助

摘　　要：Polymerization of methyl methacrylate in toluene, at various temperatures with silica gel grade 955 supported \[C\-5Me\-5\]\-2SmMe(THF) was studied. This type of polymerization exhibits several characteristics. The PMMA obtained has higher number average molecular weight and wider molecular weight distribution compared with those obtained by solution polymerization with homogeneous catalyst system, although the polymerization activity is lower.Polymerization of methyl methacrylate in toluene, at various temperatures with silica gel grade 955 supported \[C\-5Me\-5\]\-2SmMe(THF) was studied. This type of polymerization exhibits several characteristics. The PMMA obtained has higher number average molecular weight and wider molecular weight distribution compared with those obtained by solution polymerization with homogeneous catalyst system, although the polymerization activity is lower.

关 键 词：有机钐 甲基丙烯酸甲酯 聚合 负载型催化剂 二氧化硅 聚合性能 [C5Me5]2SmMe(THF) 聚甲基丙烯酸甲酯 

分 类 号：O632.52[理学—高分子化学] O643.361[理学—化学]