第 44 卷第 2 期 |  | Vol. 44 No. 2 | 2014 年 4 月 | Apr 2014 |
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所属栏目:功能材料
活性开环聚合制备pH响应性可降解聚酯 |
路德待,李 娟,段鹏雪,李婷娥
(西北师范大学 化学化工学院,生态环境相关高分子材料教育部重点实验室,甘肃省高分子材料重点实验室,甘肃 兰州 730070) |
摘 要:分别以N-杂环卡宾有机催化剂和金属钠有机配合物作为活性催化剂催化单体3-[(苄氧羰基)甲基]-6-甲基-1,4-二氧六环-2,5-二酮进行开环聚合,解保护后得到具有pH响应性的聚(苹果酸-乳酸)共聚物。凝胶渗透色谱(GPC)和核磁共振(1H NMR)对聚合物的平均分子量及其结构测定的结果,2种催化剂都可以得到分子量分布较窄的聚合物,但N-杂环卡宾有机催化剂的单体转化率低。 |
关键词:聚酯;pH响应性;可降解;开环聚合 |
中图分类号:TQ323 文献标识码:A 文章编号:1009-9212(2014)02-0054-03 |
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Preparation of pH-Responsive Biodegradable Polyester by Ring-opening Polymerization |
LU De-dai, LI Juan, DUAN Peng-xue, LI Ting-e
(Key Laboratory of Eco-Environment Related Polymer Materials of Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China) |
Abstract:Ring-opening polymerization of 3-[(benzyloxycarbonyl)methyl]-6-methyl-1,4-dioxane-2,5-dione, which can be further converted into pH-responsive polyester after de-protection, was catalyzed separately by N-heterocyclic carbene and organo-sodium complexes. 1H NMR and GPC results showed that both catalysts could give the polymer with narrow molecular weight distribution, but the conversion of the monomer catalyzed by N-heterocyclic carbene was very low. |
Key words:polyester; pH-responsive; biodegradable; ring-opening polymerization |
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基金项目:国家自然科学基金青年基金项目(51103118)。
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作者简介: 路德待(1976-),男,甘肃兰州人,副教授,博士,研究方向:生物医用高分子(E-mail:ludedai@126.com)。
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收稿日期: 2014-04-0
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