Synthesis of heteroarm star-branched polymers by means of anionic living polymerization

被引：24

作者：

Hirao, A ^{[1
]}

Matsuo, A ^{[1
]}

Morifuji, K ^{[1
]}

Tokuda, Y ^{[1
]}

Hayashi, M ^{[1
]}

机构：

[1] Tokyo Inst Technol, Fac Chem, Dept Polymer Chem, Meguro Ku, Tokyo 1528552, Japan

来源：

POLYMERS FOR ADVANCED TECHNOLOGIES | 2001年 / 12卷 / 11-12期

关键词：

star-branched polymer; heteroarm star polymer; anionic living polymerization; living coupled product; living poly(t-butyl methacrylate);

D O I：

10.1002/pat.88

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The synthesis of well-defined three- and five-arm star polymers, with varying arm lengths, was described by the method based on anionic living polymerization. A three-arm AB(2) star polymer was synthesized by the linking reaction of a specially designed two chloromethyl-phenyl-end-functionalized polystyrene prepolymer with the anionic living polymer of t-butyl methacrylate initiated with diphenylmethylpotassium. A five-arm AA'B-2(2) star polymer was synthesized by the linking reaction of the same functionalized polystyrene having two chloromethylphenyl termini with the block copolymeric anion prepared from the coupling reaction of polystyryllithium with 1,1-diphenylethylene-end-functionalized poly(alpha-methylstyrene). Both star polymers were obtained in more than 95% yields and were found to possess well-defined structures in terms of molecular weight, molecular weight distribution, arm number, and composition. Copyright (C) 2001 John Wiley Sons, Ltd.

引用

页码：680 / 686

页数：7

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