Star-shaped poly (Γ-caprolactone-b-ethylene glycol):: Synthesis, characterization and aggregation behavior

被引：0
|
作者：
Fan, Yujiang [1 ]
Liang, Jie [1 ]
Chen, Guoping [2 ]
Tateishi, Tetsuya [2 ]
Gu, Zhongwei [1 ]
Zhang, Xingdong [1 ]
机构：
[1] Sichuan Univ, Natl Engn Res Ctr Biomat, 29 Wangjiang Rd, Chengdu 610064, Peoples R China
[2] Natl Inst Mat Sci, Ctr Biomat, Tsukuba, Ibaraki 3050044, Japan
来源：
ASBM7: ADVANCED BIOMATERIALS VII | 2007年 / 342-343卷
关键词：
star-shaped block copolymer; poly Gamma-caprolactone; poly (ethylene glycol); aggregation;
D O I：
10.4028/www.scientific.net/KEM.342-343.725
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
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 F-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 confirrned 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 arri, and the influences of structure factors were discussed.
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页码：725 / +
页数：2
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