Hydrolytic degradation of polyester-polyether block copolymer based on polycaprolactone/poly(ethylene glycol)/polylactide
文献类型：期刊论文
| 作者 | Chen, HL; Bei, JZ; Wang, SG |
| 刊名 | POLYMERS FOR ADVANCED TECHNOLOGIES
 |
| 出版日期 | 2000-04-01 |
| 卷号 | 11期号:4页码:180-184 |
| 关键词 | Polyester-polyether Block Copolymer Polycaprolactone/poly(Ethylene Glycol)Polylactide (Pcel) Degradation Hydrophilicity Crystallinity Degradation Mechanism |
| ISSN号 | 1042-7147 |
| 英文摘要 | Polyester-polyether block copolymers based on polycaprolactone/poly(ethylene glycol)/polylactide (PCEL) with various compositions were synthesized by direct copolymerization of epsilon-caprolactone, L-lactide and PEG (6000) in the presence of stannous octoate at 130 degrees C for 56 hr. The degradation behavior of the copolymers was investigated in a pH 7.4 phosphate buffer solution at 37 +/-1 degrees C. Various techniques such ns weight, gel permeation chromatography, H-1 nuclear magnetic resonance, differential scanning calorimetry and X-ray diffractometry were used to monitor the changes in water absorption, weight loss, molar mass, molar mass distribution, thermal properties and compositions. The results show that the hydrophilicity of copolymer was enhanced with increasing poly(ethylene oxide) content, which led to the PEG sequences fast release and an increase in weight loss of the copolymer. Bimodal chromatograms were detected in the degradation, which were attributed to the degradation mechanism of the partial crystalline polymer proceeding predominantly in amorphous zones. Copyright (C) 2000 John Wiley & Sons, Ltd. |
| 语种 | 英语 |
| WOS记录号 | WOS:000087036400006 |
| 出版者 | JOHN WILEY & SONS LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/76389]  |
| 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, Ctr Mol Sci, Inst Chem, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, HL,Bei, JZ,Wang, SG. Hydrolytic degradation of polyester-polyether block copolymer based on polycaprolactone/poly(ethylene glycol)/polylactide[J]. POLYMERS FOR ADVANCED TECHNOLOGIES,2000,11(4):180-184. |
| APA | Chen, HL,Bei, JZ,&Wang, SG.(2000).Hydrolytic degradation of polyester-polyether block copolymer based on polycaprolactone/poly(ethylene glycol)/polylactide.POLYMERS FOR ADVANCED TECHNOLOGIES,11(4),180-184. |
| MLA | Chen, HL,et al."Hydrolytic degradation of polyester-polyether block copolymer based on polycaprolactone/poly(ethylene glycol)/polylactide".POLYMERS FOR ADVANCED TECHNOLOGIES 11.4(2000):180-184. |
入库方式： OAI收割
来源：化学研究所
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