高等学校化学学报 ›› 2006, Vol. 27 ›› Issue (4): 758.

• 研究论文 • 上一篇    下一篇

聚甲基丙烯酸甲酯-聚甲基丙烯酸两亲性嵌段共聚物的制备及自组装形态的研究

王莹, 王长明, 杨柏   

  1. 吉林大学化学学院, 超分子结构与材料教育部重点实验室, 长春 130012
  • 收稿日期:2005-04-20 出版日期:2006-04-10 发布日期:2006-04-10
  • 通讯作者: 杨柏(1962年出生), 男, 博士, 教授, 博士生导师, 主要从事无机有机纳米复合与有序组装材料研究.E-mail: yangbai@jlu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 20374024)和“长江学者和创新团队发展计划”资助.

Synthesis of  P(MMA-b-MAA) Amphiphilic Block Copolymer  and  Its Self-organization Behavior in Solvent

WANG Ying, WANG Chang-Ming, YANG Bai*   

  1. Key Laboratory for Supramolecular Structure and Materials, Ministry of Education, College of Chemistry, Jilin University, Changchun 130012, China
  • Received:2005-04-20 Online:2006-04-10 Published:2006-04-10
  • Contact: YANG Bai,E-mail: yangbai@jlu.edu.cn

摘要:

以2-溴异丁酸乙酯为引发剂, 氯化亚铜/联二吡啶为催化剂, 通过原子转移自由基聚合(ATRP)获得分子链末端含一个α-溴原子的聚甲基丙烯酸甲酯(PMMA-Br), 以此为大分子引发剂引发甲基丙烯酸铅[Pb(MA)2]单体进行ATRP反应, 制得P[MMA-b-Pb(MA)2]嵌段共聚物, 将此共聚物在盐酸中进行离子交换即得聚甲基丙烯酸甲酯-聚甲基丙烯酸的两亲性嵌段共聚物[P(MMA-b-MAA)]. 用FTIR, GPC, NMR和SEM方法对共聚物进行了表征.

关键词: 原子转移自由基聚合; 两亲性嵌段共聚物; 自组装; 离子交换

Abstract:

Using ethyl 2-bromoisobutyrate as the initiator, CuCl/α-α′-bipyridine(BPy) as the catalyst and ligand, the poly(methyl methacrylate) with single-caped halogen(PMMA-Br) was synthesized by atom transfer radical polymerization(ATRP). Then using PMMA-Br as the macroinitiator and CuCl/BPy as the catalyst and ligand, the block copolymer P[MMA-b-Pb(MA)2] was synthesized. After putting the copolymer P[MMA-b-Pb(MA)2] dip in hydrochloric acid for one day, the amphiphilic copolymer P(MMA-b-MAA) with a low polydispersity was synthesized by ion exchange. Then P(MMA-b-MAA) was dissolved in DMF followed by dialyzsis in deionized water, the nanoaggregate  of P(MMA-b-MAA) comes into being. All products were characterized by FTIR, GPC, NMR and SEM. The results show that the amphiphilic copolymer containing carboxylic block can be prepared though ATRP and ion exchange by introduction of  a new monomer containing metal ions,  lead dimethacrylate Pb(MA)2.

Key words: Atom transfer radical polymerization(ATRP); Amphiphilic block copolymer; Self-assembly;  Ion exchange

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