| 引用本文: | 陈建海.生物降解聚酯材料L-PLA 与ε-PCL 共混行为的研究.[J].国防科技大学学报,1991,13(4):83-86.[点击复制] |
| Chen Jianhai.A Study on the B1end Behavior of the Biodegradable Polylactone——L-PLA and ε-PCL[J].Journal of National University of Defense Technology,1991,13(4):83-86[点击复制] |
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| 生物降解聚酯材料L-PLA 与ε-PCL 共混行为的研究 |
| 陈建海 |
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(材料科学与应用化学系)
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| 摘要: |
| 本文用本体融熔共混法研究了聚 (L-丙交酯)与聚（ε-己内酯)的共混行为。发现在存在少量催化剂钛酸丁酯Ti(OBu)4情况下，两种均聚物于 150C°明显降解。13C-NMR 核磁共振精细谱图及扫描示差热分析DSC谱图证实它们间发生酯交换。由13C-NMR与1H-NMR谱图计算出共聚物中L-LA与-CL 嵌段平均链长与它们的摩尔比值。 |
| 关键词: 共混，酯交换，聚己内酯，聚(L-丙交酯) |
| DOI： |
| 投稿日期：1990-04-23 |
| 基金项目: |
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| A Study on the B1end Behavior of the Biodegradable Polylactone——L-PLA and ε-PCL |
| Chen Jianhai |
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(Department of Material Science and Applied Chemistry)
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| Abstract: |
| This paper studies the bulk-melting blend behavior of L-PLA/PCL and their transesterification. The degration of two polymers is apparently observed in blend with catalyst titanium (IV) tetrabutoxide Ti (OBu)4 at 150 C. The presence of significant transesterification is proved by 13C-NMR spectroscopy and differential scanning calorimetry (DSC) in blend of L-PLA/PCL. The average lengths of lactone block Lc and of L-lactide block L1-in the copolymer are calculated from 13C-NMR spectra and their molar composition are derived from 1H-NMR spactra. |
| Keywords: blend,transesterification,Poly (ε-caprolactone),Poly (L-Iactide) |
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