| Shape memory polyurethanes containing azo exhibiting photoisomerization function | |
| Department | 固体润滑国家重点实验室 ; 先进润滑与防护材料研究发展中心 |
Zhang YM(张耀明); Wang C(王超) ; Pei XQ(裴先强); Wang QH(王齐华); Wang TM(王廷梅)
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| 2010 | |
| Source Publication | Journal of Materials Chemistry
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| ISSN | 0959-9428 |
| Volume | 20Pages:9976-9981 |
| Abstract | A series of azobenzene-containing polyurethanes (azoPU) was synthesized. The structure of the azoPUand the synthesis process were detected by FTIR and nuclear magnetic resonance (NMR), and thetransition temperature was determined by differential scanning calorimetry (DSC). Tensile and cyclicthermomechanical experiment results revealed that excellent mechanical properties, shape fixity (Rf),and shape recovery (Rr) were obtained by the addition of azo to the chain of PU. Rr and Rf of azoPUincreased with the increase of hard segment (HS) content. The higher HS content enhanced interactionamong polymer chains as the chances of induced dipole–dipole interaction between aromatic ringsincreased in the presence of azo in the main chain. The materials presented trans-cis isomerizationunder UV irradiation in addition to the shape memory effect. The UV-vis spectrum indicated thatphotoisomerization occurred both in solution and solid state. It is expected that the work may behelpful in expanding the application of shape memory PU in areas of drug release and optical data storage. |
| Subject Area | 材料科学与物理化学 |
| Funding Organization | the innovative group foundation from NSFC (Grant No. 50721062);the important direction project for the knowledge innovative engineering of Chinese Academy of Sciences (Grant No. KGCX3-SYW- 205);the National 973 project of China (2007CB607606) |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 聚合物自润滑复合材料组 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/1014 |
| Collection | 固体润滑国家重点实验室（LSL） 中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心 |
| Corresponding Author | Wang QH(王齐华) |
| Recommended Citation GB/T 7714 | Zhang YM,Wang C,Pei XQ,et al. Shape memory polyurethanes containing azo exhibiting photoisomerization function[J]. Journal of Materials Chemistry,2010,20:9976-9981. |
| APA | 张耀明,王超,裴先强,王齐华,&王廷梅.(2010).Shape memory polyurethanes containing azo exhibiting photoisomerization function.Journal of Materials Chemistry,20,9976-9981. |
| MLA | 张耀明,et al."Shape memory polyurethanes containing azo exhibiting photoisomerization function".Journal of Materials Chemistry 20(2010):9976-9981. |
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| File Name/Size | DocType | Version | Access | License | ||
| 20109976-9981.pdf（256KB） | 开放获取 | License | View Application Full Text | |||
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