高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (10): 2138.doi: 10.7503/cjcu20120624

• 研究快报 • 上一篇    下一篇

侧链含炔丙基的PLGA-PEG-PLGA三嵌段共聚物的合成与表征

徐宠恩, 杨静, 罗丙红, 李建华, 徐湾, 周长忍   

  1. 暨南大学材料科学与工程系, 人工器官与材料教育部工程研究中心, 广州 510632
  • 收稿日期:2012-07-04 出版日期:2012-10-10 发布日期:2012-09-12
  • 通讯作者: 罗丙红, 女, 博士, 教授, 主要从事生物材料和组织工程支架材料研究. E-mail: tluobh@jnu.edu.cn; 周长忍, 男, 博士, 教授, 博士生导师, 主要从事组织工程与生物材料研究. E-mail: tcrz9@jnu.edu.cn E-mail:tluobh@jnu.edu.cn;tcrz9@jnu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 81171459); 广东省自然科学基金(批准号: 10151063201000033)和暨南大学"211工程"生物材料与组织工程创新基金(批准号: 50621030)资助.

Synthesis and Characterization of PLGA-PEG-PLGA Triblock Copolymer with Side Propargyl Groups

XU Chong-En, YANG Jing, LUO Bing-Hong, LI Jian-Hua, XU Wan, ZHOU Chang-Ren   

  1. Department of Materials Science and Engineering, Engineering Research Center of Artificial Organs and Materials, Ministry of Education, Jinan University, Guangzhou 510632, China
  • Received:2012-07-04 Online:2012-10-10 Published:2012-09-12

摘要:

通过简单易行的技术路线合成了炔丙基化乙交酯单体,以1,4-二甲氨基吡啶为催化剂,亲水性和生物相容性良好的聚乙二醇为大分子引发剂,在较滥条件下引发炔丙基化乙交酯和丙交酯的开环共聚,制备了侧链含炔丙基的聚(乳酸-羟基乙酸)-聚乙二醇-聚(乳酸-羟基乙酸)(PLGA-PEG-PLGA)三嵌段共聚物,并对产物的组成与结构进行了表征.为生物孤犊触乳聚酯的分子修饰、生物相容性的提高探索一条简单而有效的途径

关键词: 生物降解聚酯, 改性, 点击化学, 炔丙基化乙交酯, PLGA-PEG-PLGA三嵌段共聚物

Abstract:

In order to introduce the propargyl groups to the side chains of biodegradable polyester which avai-lable for the attachment of functionality using "click" chemistry, the propargyl glycolide(PG) monomer was synthesized and characterized by FTIR and 13C NMR. Then, a series of PLGA-PEG-PLGA tri-block copolymers with side propargyl groups was prepared by bulk ring-opening copolymerization of L-lactide and propargyl glycolide using 1,4-dimethylaminopyridine(DMAP) as a catalyst and polyethylene glycol(PEG) as a cointiator with different feed ratios(nPEG:nPG:nL-LA). The structure and properties of the PLGA-PEG-PLGA tri-block copolymers with side propargyl groups were studied by FTIR, 1H NMR and gel permeation chromatography.

Key words: Biodegradable polyester, Modification, Click chemistry, Propargyl glycolide, PLGA-PEG-PLGA triblock copolymer

中图分类号: 

TrendMD: