原子转移自由基聚合制备聚(甲基丙烯酸甲酯-b-苯乙烯)时单体聚合顺序对嵌段效率的影响

傅志峰; 石艳; 焦书科; 黄明智

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原子转移自由基聚合制备聚(甲基丙烯酸甲酯-b-苯乙烯)时单体聚合顺序对嵌段效率的影响

研究论文 | 更新时间：2021-03-19

- 原子转移自由基聚合制备聚(甲基丙烯酸甲酯-b-苯乙烯)时单体聚合顺序对嵌段效率的影响
- EFFECT OF MONOMER POLYMERIZATION SEQUENCE ON THE SYNTHESIS OF POLY(METHYL METHACRYLATE-b-STYRENE) BY ATOM TRANSFER RADICAL POLYMERIZATION
- 高分子学报 1999年第6期页码：692-696
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- 纸质出版日期：1999-12-20，
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傅志峰, 石艳, 焦书科, 黄明智. 原子转移自由基聚合制备聚(甲基丙烯酸甲酯-b-苯乙烯)时单体聚合顺序对嵌段效率的影响[J]. 高分子学报, 1999,(6):692-696.

FU Zhifeng, SHI Yan, JIAO Shuke, HUANG Mingzhi. EFFECT OF MONOMER POLYMERIZATION SEQUENCE ON THE SYNTHESIS OF POLY(METHYL METHACRYLATE-b-STYRENE) BY ATOM TRANSFER RADICAL POLYMERIZATION[J]. Acta Polymerica Sinica, 1999,(6):692-696.
傅志峰, 石艳, 焦书科, 黄明智. 原子转移自由基聚合制备聚(甲基丙烯酸甲酯-b-苯乙烯)时单体聚合顺序对嵌段效率的影响[J]. 高分子学报, 1999,(6):692-696. DOI：

FU Zhifeng, SHI Yan, JIAO Shuke, HUANG Mingzhi. EFFECT OF MONOMER POLYMERIZATION SEQUENCE ON THE SYNTHESIS OF POLY(METHYL METHACRYLATE-b-STYRENE) BY ATOM TRANSFER RADICAL POLYMERIZATION[J]. Acta Polymerica Sinica, 1999,(6):692-696. DOI：

摘要

采用原子转移自由基聚合研究了聚（甲基丙烯酸甲酯-ｂ-苯乙烯）嵌段共聚物的合成

实验结果表明

当先进行甲基丙烯酸甲酯的聚合

然后再进行苯乙烯的聚合时

得到了完全的嵌段共聚物；反之

如果改变单体的聚合顺序

则嵌段效率很低．用聚合物末端Ｃ—Ｘ（Ｘ＝Ｃｌ

Ｂｒ）键的断裂能对实验结果进行了解释．

Abstract

The synthesis of poly(styrene-b-alkyl acrylate) and poly(styrene-b-methyl methacrylate) block copolymers by atom transfer radical ppolymerization (ATRP) with CuX(X=Cl

or Br)/2

2′-bipyridine (bipy) complex as the catalyst was studied in this work. When chlorine capped polystyrene (PSt-Cl) synthesized by ATRP was used to initiate the polymeriztion of methyl acrylate

ethyl acrylate or n-butyl acrylate in the presence of CuCl/bipy

well-defined poly(styrene-b-alkyl acrylate) block copolymers were obtained. However

when PSt-Cl or PSt-Br was used as macroinitiator to initiate the polymerization of the macroinitiator PSt-X(X=Cl.or Br)

showing the blocking efficiency was low. While the ATRP of styrene with PMMA-Cl as the macroinitiator gave well-defined poly(methylmethacrylate-b-styrene) block copolymer. These results wereexplained according to the aifference of C-X bond dissociation energy between PSt-X and PMMA-X(X=Cl

or Br).

关键词

原子转移自由基聚合嵌段共聚物苯乙烯甲基丙烯酸甲酯

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