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; 呼德拉提·阿那斯; 阿孜古丽·木尔赛力木

doi:10.3969/j.issn.1000-5641.2015.03.014

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

doi: 10.3969/j.issn.1000-5641.2015.03.014

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

基金项目:

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)

详细信息

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.

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

中图分类号: TQ314.2
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出版历程
- 收稿日期: 2014-04-28
- 刊出日期: 2015-05-25

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

摘要

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n1.07）.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.
- 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.
- amphiphilic copolymerATRPPEO-PtBAhydrolysis /

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