Bidentate [N, N] nickel complexes with salen type ligands for polymerization of methyl methacrylate

被引：0
|
作者：
Bialek, Marzena [1 ]
Czaja, Krystyna [1 ]
Niewiadomska, Joanna [1 ]
机构：
[1] Opole Univ, Fac Chem, PL-45052 Opole, Poland
来源：
POLIMERY | 2008年 / 53卷 / 11-12期
关键词：
methyl methacrylate; polymerization; nickel complex; modified salen ligand; methylalumoxane;
D O I：
10.14314/polimery.2008.883
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Nickel complexes with bidentate [N,N] salen type ligands activated by different organo-aluminium compounds, within which methylalurnoxane (MAO) turned out to be the best, were studied in methyl methacrylate (MMA) polymerization. Activity of the investigated complexes was found to increase with increasing Al/Ni molar ratio. The studied catalytic systems were found to produce high molecular weight (M-w = 280 000-560 000) poly(methyl methacrylate) (PMMA) with rich syndiotactic microstructure. Activity of the catalyst as well as M-w and glass transition temperature (T-g) of poly(methyl methacrylate) (PMMA) are dependent on polymerization temperature and they reach maximum values for reaction temperature about 30 degrees C.
引用
收藏
页码：883 / 887
页数：5
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