Supramolecular structured hydrogel preparation based on self-assemblies of photocurable star-shaped macromers with α-cyclodextrins

被引：29
|
作者：
Wei, HL [1 ]
Zhang, AY [1 ]
Qian, LJ [1 ]
Yu, HQ [1 ]
Hou, DD [1 ]
Qiu, RX [1 ]
Feng, ZG [1 ]
机构：
[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China
来源：
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2005年 / 43卷 / 13期
关键词：
cyclodextrins; hydrogels; photopolymerization; star-shaped macromers;
D O I：
10.1002/pola.20773
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A new gelation process during self assemblies of methacryol terminated poly(L-lactide)-b-poly(ethylene glycol) (PLA-b-PEG) copolymers containing three or four arms with α-CDs was investigated. Hydroxyl-terminated star-shaped copolymers of PLA-b-PEG were synthesized in toluene by a ring-opening polymerization of LA with 3A-PEG or 4A-PEG as an initiator and Sn(Oct) 2 as a catalyst. Soluble macromers bearing methacryloyl terminals were prepared through the reaction of PLA-b-PEG copolymers with methacrylic anhydride in toluene. The results showed that these gels can be photopolymerized, when exposed to ultraviolet light in the presence of a photoinitiator, to produce biodegradable supramolecular structured hydrogels.
引用
收藏
页码：2941 / 2949
页数：9
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