Syntheses of syndiotactic-polystyrene-graft-poly(methyl methacrylate), syndiotactic-polystyrene-graft-poly(methyl acrylate), and syndiotactic-polystyrene-graft-atactic-polystyrene with defined structures by atom transfer radical polymerization

被引：85

作者：

Liu, S ^{[1
]}

Sen, A ^{[1
]}

机构：

[1] Penn State Univ, Dept Chem, University Pk, PA 16802 USA

来源：

MACROMOLECULES | 2000年 / 33卷 / 14期

关键词：

D O I：

10.1021/ma992121t

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Syndiotactic polystyrene graft copolymers, syndiotactic-polystyrene-graft-poly(methyl methacrylate), syndiotactic-polystyrene-graft-poly(methyl acrylate), and syndiotacfic-polystyrene-graft-polysltyrene, were synthesized by atom transfer radical polymerization using brominated syndiotactic polystyrene as initiator and CuBr combined with pentamethyldiethylenetriamine as catalyst. Both the graft density and the molecular weight of the graft segments were controlled by changing the bromine content of syndiotactic polystyrene and the amount of monomer used in the grafting reaction. The atom transfer radical polymerization mechanism for grafting was supported by NMR analysis of the end groups. The melting point behavior of syndiotactic-polystyrene-graft-poly(methyl methacrylate) depends on both graft density and graft length.

引用

页码：5106 / 5110

页数：5

共 32 条

[1] Design of initiators for living radical polymerization of methyl methacrylate mediated by ruthenium(II) complex [J].