节点文献

八臂星形共聚物8-PLGA的合成

Synthesis of Eight-arm Star-shaped Copolymer 8-PLGA

  • 推荐 CAJ下载
  • PDF下载
  • 不支持迅雷等下载工具,请取消加速工具后下载。

【作者】 欧阳春平王瑀赵顺新宋存先张政朴

【Author】 OUYANG Chun-ping1,WANG Yu2, ZHAO Shun-xin2,SONG Cun-xian3,ZHANG Zheng-pu2(1.Research and Development Center,National Engineering Laboratory for Plastic Modification and Processing, Kingfa Science and Technology Co.,Ltd.,Guangzhou 510520,China;2.Key Laboratory of Functional Polymer Materials,Ministry of Education,and Institute of Polymer Chemistry,Nankai University,Tianjin 300071,China; 3.Tianjin Key Laboratory of biomedical Materials,Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College,Tianjin 300192,China)

【机构】 金发科技股份有限公司技术发展中心塑料改性与加工国家工程实验室南开大学高分子化学研究所功能高分子材料教育部重点实验室中国医学科学院北京协和医学院生物医学工程研究所天津生物医学材料重点实验室

【摘要】 以D,L-丙交酯和乙交酯为单体,异辛酸亚锡(SnOct2)为催化剂,三季戊四醇为多功能基引发剂,采用本体熔融聚合法合成了分子量可控的八臂星形聚合物———聚乙丙交酯(8-PLGA),其结构和性能经13C NMR,凝胶渗透色谱(GPC)和差示扫描量热仪(DSC)表征。结果表明,8-PLGA的结构及分子量与设计值基本吻合,玻璃化转变温度(Tg)随分子量的增加而升高。

【Abstract】 The eight-arm star-shaped copolymer,poly(lactide-co-glycolide)(8-PLGA),was synthesized via the ring-opening melting polymerization of D,L-lactide and glycolide using tripentaerythritol as the multifuctional initiator and stannous 2-ethyl hexanoate(SnOct2) as the catalyst.The chain compositions of 8-PLGA was characterized by 13C NMR.Thermal properties,molecular weight and polydispersity index were determined by DSC and GPC.The results showed that the structure and molecular weight of 8-PLGA were basically in accord with the pre-design,and Tg increased as the molecular weight increasing.

【基金】 国家自然科学基金资助项目(NSFC#50873114);天津市科技计划项目(05YFGPGX26200)
  • 【文献出处】 合成化学 ,Chinese Journal of Synthetic Chemistry , 编辑部邮箱 ,2012年05期
  • 【分类号】R914
  • 【被引频次】14
  • 【下载频次】228
节点文献中: