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STAR-SHAPED POLY (Γ-CAPROLACTONE-b-ETHYLENE GLYCOL): SYNTHESIS, CHARACTERIZATION AND AGGREGATION BEHAVIOR

文献类型: 会议论文

第一作者: Yujiang Fan

作者: Yujiang Fan 1 ; Jie Liang 2 ; Guoping Chen; Tetsuya Tateishi; Zhongwei Gu; Xingdong Zhang;

作者机构: 1.National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China

2.Biomaterials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan

关键词: star-shaped block copolymer;poly Γ-caprolactone;poly (ethylene glycol);aggregation

会议名称: Advanced Biomaterials VII

主办单位:

页码: 725,728-

摘要: Linear and Star-shaped PCL-b-PEG copolymers were synthesized through a two step process, including the first step to synthesize the star-shaped PCL through ring-opening polymerization of Γ-caprolactone initiated from multi-functional alcohol under the existence of tin(II) ethylhexanoate [Sn(Oct)_2] catalyst, and the following step to couple the obtained star-shaped PCL with PEG segments using bi-functional linker. The structure of the polymers was confirmed by IR, NMR, GPC, et al. The aggregation behaviors of the star-shape copolymers were compared with that of the linear block copolymer with corresponding molecular weight of each arm, and the influences of structure factors were discussed.

分类号: [ "R318.08" , "R318.08"]

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