Synthesis and characterization of a functionalized biodegradable copolymer: poly((L)-lactide-co-RS-beta-malic acid)
文献类型：期刊论文
| 作者 | He, B; Bei, JZ; Wang, SG |
| 刊名 | POLYMER
 |
| 出版日期 | 2003-02-01 |
| 卷号 | 44期号:4页码:989-994 |
| 关键词 | Poly((l)-lactide-co-rs-beta-malic Acid) Poly((l)-lactide-co-rs-beta-benzyl Malate) Biodegradable Polymer |
| ISSN号 | 0032-3861 |
| 英文摘要 | The ring-opening copolymerization of L-lactide (L-LA) and RS-beta-benzyl malate (MA) was performed in the presence of stannous octoate. Copolymers were successfully synthesized using different feeding doses. H-1 NMR analysis revealed that the compositions of the copolymers with high MA contents were similar to the feeding doses. GPC measurements showed that the molecular weight of the copolymers decreased as the MA content increased. The hydrophilicity of these copolymers was remarkably improved after they were hydrogenolyzed over palladium on charcoal, which removed the pendant benzyl groups. These de-protected copolymers had higher glass transition temperatures (T-g) than both the corresponding protected copolymers and the PLLA homopolymer due to the formation of intermolecular hydrogen bonds between the pendant carboxyl groups. The morphology of the copolymers changed from crystalline to amorphous with increasing RS-beta-malic acid content. (C) 2002 Elsevier Science Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000180585400009 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/80099]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang, SG |
| 作者单位 | Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, B,Bei, JZ,Wang, SG. Synthesis and characterization of a functionalized biodegradable copolymer: poly((L)-lactide-co-RS-beta-malic acid)[J]. POLYMER,2003,44(4):989-994. |
| APA | He, B,Bei, JZ,&Wang, SG.(2003).Synthesis and characterization of a functionalized biodegradable copolymer: poly((L)-lactide-co-RS-beta-malic acid).POLYMER,44(4),989-994. |
| MLA | He, B,et al."Synthesis and characterization of a functionalized biodegradable copolymer: poly((L)-lactide-co-RS-beta-malic acid)".POLYMER 44.4(2003):989-994. |
入库方式： OAI收割
来源：化学研究所
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