华东师范大学学报(自然科学版) ›› 2015, Vol. 2015 ›› Issue (3): 116-123.doi: 10.3969/j.issn.1000-5641.2015.03.014

• 化学 • 上一篇    下一篇

窄分子量分布双亲性嵌段共聚物PEO-b-PtBA的合成及其水解窄分子量分布双亲性嵌段共聚物PEO-b-PtBA的合成及其水解

库里松·哈衣尔别克1,呼德拉提·阿那斯2,阿孜古丽·木尔赛力木1   

  1. 1. 新疆师范大学化学 化工学院, 乌鲁木齐830054;2. 新疆维吾尔自治区水产科学研究所, 乌鲁木齐830052
  • 收稿日期:2014-04-28 出版日期:2015-05-25 发布日期:2015-05-28
  • 通讯作者: 阿孜古丽·木尔赛力木,女,副教授,主要从事高分子材料研究 E-mail:arzu_hma@sina.com.
  • 作者简介:库里松·哈衣尔别克,女,实验师,主要从事分析化学研究.E-mail: 166657320@qq.com.
  • 基金资助:

    国家自然科学基金青年项目(21104063);国家自然科学基金地区基金项目(21165018)

Synthesis of amphiphilic copolymer PEO-b-PtBA with narrow molecular weight distribution and its hydrolysis

KAYIRBEK Gulsum1,ANAS Hudrat2,MUSLIM Arzugul1   

  • Received:2014-04-28 Online:2015-05-25 Published:2015-05-28

摘要: 以PEO-Br为大分子引发剂,通过ATRP法合成了一组两亲性两嵌段共聚物PEO45-b-PtBAx(x=28, 35, 53).采用HNMR、FTIR、 SEC和TEM对产物进行了表征,讨论了投料比对控制产物的分子链结构,分子量及其分布的影响.结果表明,tBA的转化率较高,1H NMR结果显示成功制得目标产物,所得嵌段共聚物均具有极窄的分子量分布(Mw/Mn≤1.07).在tBA相对于PEOBr的投料比较小时可以对嵌段共聚物结构进行精确调控.tBA投入量的增大会导致分子量分布变宽及引发效率下降.PEO45-b-PtBA35被成功水解为PEO45-b-PAA35,在中性水溶液中PEO45-b-PAA35自组装形成了分散较为均匀的球形胶束.

关键词: 双亲性嵌段共聚物, ATRP聚合, PEO-PtBA, 水解

Abstract: A group of amphiphilic diblock copolymers PEO45-b-PtBAx(x=28, 35, 53) were synthesized by ATRP using PEO-Br as macroinitiator. Samples were characterized by SEC, 1H NMR, FTIR and TEM. The influence of feed ratio to the control of the structure, molecular weight and molecular weight distributions were discussed. The results showed that, the conversion of tBA was high and the 1H NMR results confirmed the targeted products were synthesized successfully. All three copolymers had a narrow molecular weight distributions (Mw/Mn≤1.07). When the feed ratio of tBA to PEOBr was low, the structures of copolymers could be controlled accurately. The increase of feed ratio of tBA to PEOBr caused broadening of molecular weight distributions and the decreasing of initiating efficiency. The hydrolysis of PEO45-b-PtBA35 to PEO45-b-PAA35 was performed successfully. PEO45-b-PAA35was selfassembled into well dispersed spherical micelles in neutral aqueous solution.

Key words: amphiphilic copolymer, ATRP, PEO-PtBA, hydrolysis

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