Study on biodegradation behavior of PCL/PEO/PLA tri-component copolymer
文献类型：期刊论文
| 作者 | Chen, HG; Bei, JZ; Wang, SG |
| 刊名 | ACTA POLYMERICA SINICA
 |
| 出版日期 | 2000-10-01 |
| 期号 | 5页码:626-631 |
| 关键词 | Pcl/peo/pla Tri-component Copolymer Biodegradation Crystallinity Hydrophilicity Degradation Mechanism |
| ISSN号 | 1000-3304 |
| 英文摘要 | Two kinds of PCL/PEO/PLA tri-component copolymers (PCEL) with different composition were synthesized by direct copolymerization of epsilon-caprolactone, L-lactide and PEG(6000) in the presence of stannous octoacte at 130 degrees C for 56h. The biodegradation behavior of these copolymers was investigated in a pH7.4 phosphate buffer solution at 37 +/- 1 degrees C in vitro. The changes of water sorption,loss weight,molecular weight,molecular weight distribution, thermal properties and composition of the copolymer were monitored by GPC,DSC,XRD and H-1-HMR techniques. The results showed that the hydrophilicity of the copolymer was enhanced with increasing PEO content, which lead to;decrease of the PEO component and increase of the loss weight of the copolymer with degradation time. It was considered that the obtained bi-modal chromatogram of the GPC profile was attributed to the degradation of the partial crystalline polymer. Since degradation has taken in priorty in amorphous zones and at the edges of crystalline of the polymer,bi-modal molecular weight distribution of GPC spectrum was formed. This interpretation was supported by DSC and X-ray diffraction data. |
| 语种 | 英语 |
| WOS记录号 | WOS:000089889100022 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/76339]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Chen, HG |
| 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 | Chen, HG,Bei, JZ,Wang, SG. Study on biodegradation behavior of PCL/PEO/PLA tri-component copolymer[J]. ACTA POLYMERICA SINICA,2000(5):626-631. |
| APA | Chen, HG,Bei, JZ,&Wang, SG.(2000).Study on biodegradation behavior of PCL/PEO/PLA tri-component copolymer.ACTA POLYMERICA SINICA(5),626-631. |
| MLA | Chen, HG,et al."Study on biodegradation behavior of PCL/PEO/PLA tri-component copolymer".ACTA POLYMERICA SINICA .5(2000):626-631. |
入库方式： OAI收割
来源：化学研究所
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