ANIONIC POLYMERIZATION OF ALKYL METHACRYLATES INITIATED BY nBuCu(NCy2)Li

被引:0
作者
韩丙勇 [1 ]
杨万泰 [1 ]
机构
[1] State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology(BUCT)
基金
中国国家自然科学基金;
关键词
Anionic polymerization; Lithium organocuprates; Alkyl methacrylate;
D O I
暂无
中图分类号
O631.3 [高聚物的化学性质];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Anionic polymerization of methyl methacrylate(MMA),n-butyl methacrylate(nBMA)and glycidyl methacrylate (GMA)initiated by nBuCu(NCy2)Li(1)in tetrahydrofuran(THF)at-50℃to-10℃was investigated.It was found that the polymerization of MMA and nBMA initiated by 1 proceeded quantitatively in THF to afford PMMA and PBMA with polydispersity index 1.15-1.30 and nearly 100%initiator efficiencies at-10℃.The molecular weights increased linearly with the ratio of[monomer]/[1].However,a post-polymerization experiment carried out on this system revealed a double polymer peak by GPC when fresh monomer was added after an interval of 10 min.Polymerization of styrene could be initiated by 1,but the initiator efficiency was low.
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页码:427 / 433
页数:7
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