| 环状碳酸酯共聚改性聚乳酸性能 |
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| 引用本文： | 饶炬,龚飞荣,陈建定,程树军.环状碳酸酯共聚改性聚乳酸性能[J].华东理工大学学报(自然科学版),2009,35(2). |
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| 作者姓名： | 饶炬 龚飞荣 陈建定 程树军 |
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| 作者单位： | 华东理工大学材料科学与工程学院,超细材料制备与应用教育部重点实验室,上海,200237 |
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| 基金项目： | 国家863项目(2002AA326110,2007AA02Z450) |
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| 摘 要： | 将5-甲基-5-苄氧羰基-三亚甲基碳酸酯(MBC)与左旋丙交酯(LLA)开环共聚制备了乳酸-功能化碳酸酯共聚物(P(LLA-MBC)),研究了共聚物的力学性能、体外降解性能及生物相容性。结果表明:与聚左旋丙交酯(PLLA)相比,共聚物的拉伸强度由原来的54.3 MPa(PLLA)下降到27.2 MPa(n(MBC)∶n(LLA)=34∶66),断裂伸长率由36%提高到350%,力学性能得到较好的平衡;共聚物结晶度有所下降,体外降解速率提高;材料的生物相容性未见明显改变。
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| 关 键 词： | 聚左旋丙交酯 碳酸酯 共聚 改性 |
Polylactide Modificated by Copolymerization with Cyclic Carbonate |
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| RAO Ju,GONG Fei-rong,CHEN Jian-ding,CHENG Shu-jun.Polylactide Modificated by Copolymerization with Cyclic Carbonate[J].Journal of East China University of Science and Technology,2009,35(2). |
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| Authors: | RAO Ju GONG Fei-rong CHEN Jian-ding CHENG Shu-jun |
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| Institution: | Key Laboratory for Ultrafine Materials of Ministry of Education;School of Materials Science and Engineering;East China University of Science and Technology;Shanghai 200237;China |
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| Abstract: | Copolymers of 5-methyl-5-benzyloxycarbonate-1,3-dioxan-2-one and L-lactide were successfully synthesized by ring-opening polymerization. The mechanical property,crystallinity,degradation property in vitro and biocompatibility of the synthesized material were studied.The results indicate that high potential applications of the copolymer with better mechanical property,lower crystallinity and higher(degradation) speed are achieved. The synthesized material keeps almost the same outstanding cell biocompatibili... |
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| Keywords: | PLLA carbonate copolymerization modification |
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