Lithium alkylnickelate and alkylpalladate bimetallic “ate” complexes as initiators for anionic polymerization of methyl methacrylate
Lithium alkylnickelate and alkylpalladate bimetallic “ate” complexes as initiators for anionic polymerization of methyl methacrylate
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烷基镍酸锂和烷基钯酸双金属“ate”络合物作为甲基丙烯酸甲酯阴离子聚合引发剂
DOI：
10.1002/macp.1995.021960129
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发表时间：
1995
影响因子：
2.5
通讯作者：
K. Matyjaszewski
中科院分区：
文献类型：
--
作者：
D. Mardare;K. Matyjaszewski
甲基丙烯酸甲酯（MMA）的阴离子配位聚合在基于烷基镍酸锂和烷基钯酸锂的新型双金属引发剂存在下在四氢呋喃中于−78°C下进行。定义明确的聚（甲基丙烯酸甲酯），PMMA，分子量随转化率线性增加和相对较窄的多分散性（Mw/Mn = 1.26至1.4），通过与一些“ate”配合物的引发制备。在锂“酸盐”Ni基络合物的存在下，形成具有增强的间同立构规整度[（rr）= 73至75%]的PMMA。
Anionic-coordinative polymerization of methyl methacrylate (MMA) was carried out in the presence of new bimetallic initiators based on lithium alkylnickelates and alkylpalladates in tetrahydrofuran, at −78°C. Well-defined poly(methyl methacrylate), PMMA, with molecular weights increasing linearly with conversion and relatively narrow polydispersities (Mw/Mn = 1,26 to 1,4) were prepared by initiation with some of the “ate” complexes. In the presence of lithium “ate” Ni-based complexes, PMMA with enhanced syndiotacticity [(rr) = 73 to 75%] was formed.