Synthesis of PSt-b-PAA by ATRP Approach and Its Self-Assembling Behavior in Toluene

汤志忠; 高保娇; 何三雄

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Synthesis of PSt-b-PAA by ATRP Approach and Its Self-Assembling Behavior in Toluene

更新时间：2026-09-14

- Synthesis of PSt-b-PAA by ATRP Approach and Its Self-Assembling Behavior in Toluene
- PSt-b-PAA的ATRP法合成及其在甲苯中自组装
- Issue 3, Pages: 234-239(2006)
- 作者机构：
  
  中北大学化学工程系
- 作者简介：
- 基金信息：
- DOI：
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- Published：2006
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汤志忠, 高保娇, 何三雄. Synthesis of PSt-b-PAA by ATRP Approach and Its Self-Assembling Behavior in Toluene[J]. 2006, (3): 234-239.
DOI：

汤志忠, 高保娇, 何三雄. Synthesis of PSt-b-PAA by ATRP Approach and Its Self-Assembling Behavior in Toluene[J]. 2006, (3): 234-239. DOI：

摘要

以α-溴乙苯为引发剂

溴化亚铜为催化剂

2′-联吡啶为配体

二甲苯为溶剂

采用开放的溶液聚合体系

在磁力搅拌与氮气保护下

用原子转移自由基聚合ATRP(A tom T ransfer R ad ica lPo lym erization)法合成了嵌段共聚物聚苯乙烯-b-聚丙烯酸丁酯(PS t-b-PBA);用FT IR

1H-NM R

GPC等手段对活性聚合进行了确认

对嵌段共聚物进行了表征;水解PS t-b-PBA制备了两亲性嵌段共聚物苯乙烯-b-聚丙烯酸(PS t-b-PAA);采用直接溶解法配制了PS t-b-PAA在甲苯中的反胶束溶液;利用透射电镜(TEM)观察有效地考察了两亲嵌段共聚物PS t-b-PAA在甲苯溶液中的自组装行为.研究结果表明

在开放体系下也能较好地实施原子转移自由基聚合

制得窄分布的嵌段共聚物;控制两嵌段的长度可制得亲水链PAA短的两亲嵌段共聚物PS t-b-PAA

使其在甲苯中发生自组装

形成以亲水段为核

疏水段为壳的反胶束结构.

Abstract

The block copolymer of PSt-b-PBA with a low polydispersity has been synthesized by atom transfer radical polymerization(ATRP) in open solution polymerization system using 1-phenylethyl bromide(1-PEBr) as initiator

cuprous bromide as catalyst

2′-bipyridine(bpy) as ligand and xylene as solvent.The polymerization is conducted using an electromagnetism agitator under the protection of nitrogen atmosphere.After the characterization of the block copolymer PSt-b-PBA and the validation of the living polymerization by GPC

FTIR

and ~1H-NMR

amphiphilic block copolymer of PSt-b-PAA has been prepared by hydrolyzing of PSt-b-PBA.The reversed micellization solution of PSt-b-PAA in toluene has been prepared by directly dissolving method

and investigated by TEM observation mean.Research results show that the ATRP polymerization can also be realized well in open system

and amphiphilic block copolymer of PSt-b-PAA with shorter PAA segment and a low polydispersity can be obtained by controlling polymerization time.The reversed micells with hydrophilic core and hydrophobic shell can be formed by spontaneously self-assembling of PSt-b-PAA in toluene.

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references

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