Block copolymerization of poly(ethylene glycol) and methyl acrylate using potassium diperiodatocuprate(III)

被引：8

作者：

Liu, YH ^{[1
]}

Bai, LB

Zhang, RY

Li, YX

Liu, YW

Deng, KL

机构：

[1] Hebei Univ, Coll Chem & Environm Sci, Baoding 071002, Peoples R China

[2] Chinese Acad Sci, Beijing 100080, Peoples R China

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2005年 / 96卷 / 06期

关键词：

diperiodatocuprate; methyl acrylate; polyethers; initiators; copolymerization;

D O I：

10.1002/app.21594

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Block copolymers of methyl acrylate (MA) and poly(ethylene glycol) (PEG) have been obtained using a novel redox system-potassium diperiodatocuprate(III)[DPC]/PEG system in alkaline aqueous medium. Block copolymers with a high percentage of blocking were obtained, which indicated that the DPC/PEG redox system was an efficient initiator for this blocking. Effects of different conditions (concentration of reactants, temperature, concentration of the DPC, and reaction time) on the total conversion, percentage of blocking, and intrinsic viscosity were examined. The effects of different monomers and various PEGs with different molecular weight on the total conversion were also examined. A mechanism is proposed to explain the generation of radicals and the initiation of block compolymerization. Some basic properties of the block copolymers were also Studied by thermogravimetry and scanning electron microscope. (c) Wiley Periodicals, Inc.

引用

页码：2139 / 2145

页数：7

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