Shape memory effect of poly(L-lactide)-based polyurethanes with different hard segments
文献类型：期刊论文
| 作者 | Wang, Wenshou; Ping, Peng; Chen, Xuesi; Jing, Xiabin |
| 刊名 | POLYMER INTERNATIONAL
 |
| 出版日期 | 2007-07-01 |
| 卷号 | 56期号:7页码:840-846 |
| 关键词 | Glass Transition Temperature Poly(L-lactide) Polyurethane Shape Memory |
| ISSN号 | 0959-8103 |
| DOI | 10.1002/pi.2204 |
| 英文摘要 | A series of biodegradable polylactide-based polyurethanes (PLAUs) were synthesized using PLA diol (M(n) = 3200) as soft segment, 4,4 '-diphenylmethane diisocyanate (MDI), 2,4-toluene diisocyanate (TDI), and isophorone diisocyanate (IPDI) as hard segment, and 1,4-butanediol as chain extender. The structures and properties of these PLAUs were studied using infrared spectroscopy, differential scanning calorimetry, tensile testing, and thermomechanical analysis. Among them, the MDI-based PLAU has the highest T(g), maximum tensile strength, and restoration force, the TDI-based PLAU has the lowest T(g), and the IPDI-based PLAU has the highest tensile modulus and elongation at break. They are all amorphous. The shape recovery of the three PLAUs is almost complete in a tensile elongation of 150% or a twofold compression. They can keep their temporary shape easily at room temperature (20 degrees C). More importantly, they can deform and recover at a temperature below their T(g) values. Therefore, by selecting the appropriate hard segment and adjusting the ratio of hard to soft segments, they can meet different practical demands for shape memory medical devices. (C) 2007 Society of Chemical Industry. |
| 语种 | 英语 |
| WOS记录号 | WOS:000247218700004 |
| 出版者 | WILEY-BLACKWELL |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/62271]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Jing, Xiabin |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Wenshou,Ping, Peng,Chen, Xuesi,et al. Shape memory effect of poly(L-lactide)-based polyurethanes with different hard segments[J]. POLYMER INTERNATIONAL,2007,56(7):840-846. |
| APA | Wang, Wenshou,Ping, Peng,Chen, Xuesi,&Jing, Xiabin.(2007).Shape memory effect of poly(L-lactide)-based polyurethanes with different hard segments.POLYMER INTERNATIONAL,56(7),840-846. |
| MLA | Wang, Wenshou,et al."Shape memory effect of poly(L-lactide)-based polyurethanes with different hard segments".POLYMER INTERNATIONAL 56.7(2007):840-846. |
入库方式： OAI收割
来源：化学研究所
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