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.
源语言 | 英语 |
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页(从-至) | 2941-2949 |
页数 | 9 |
期刊 | Journal of Polymer Science, Part A: Polymer Chemistry |
卷 | 43 |
期 | 13 |
DOI | |
出版状态 | 已出版 - 1 7月 2005 |