A Multiscale Investigation on the Mechanism of Shape Recovery for IPDI to PPDI Hard Segment Substitution in Polyurethane
文献类型：期刊论文
| 作者 | Xu, Wei1; Zhang, Ruoyu1; Liu, Wei1; Zhu, Jin1; Dong, Xia2; Guo, Hongxia2; Hu, Guo-Hua3 |
| 刊名 | MACROMOLECULES
 |
| 出版日期 | 2016-08-23 |
| 卷号 | 49期号:16页码:5931-5944 |
| 英文摘要 | Shape memory thermoplastic polyurethane (SMTPU) containing isophorone diisocyanate (IPDI) in hard segment has excellent shape recoverability even after large strain deformation. However, the underlying mechanism of shape recovery remains unclear. In this study, 1,4-phenylene diisocyanate (PPDI) in the polyurethane is gradually substituted by IPDI, and multiscale effects are examined by normal and dichroic Fourier transform infrared spectroscopy (FTIR), small angle X-ray scattering (SAXS), single-molecule force spectroscopy (SMFS), and mechanical test. Contradictory to the traditional conclusion, the degree of microphase separation decreases as the content of IPDI increases, while the macroscopic shape recoverability is largely improved. With dichroic FTIR and SAXS, we find that the morphology of hard phases changed from lamellar-like to fibrillar-like, which is more stable under stretching. SMFS experiments discover that IPDI could increase the elasticity of polymer chain and could endow the hard phases with "elastic" under stress. With these two factors, we are able to explain the high recoverability of the SMTPU containing IPDI. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/35216]  |
| 专题 | 化学研究所_高分子物理与化学实验室 |
| 作者单位 | 1.Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo Key Lab Polymer Mat, Zhongguan West Rd 1219, Ningbo 315201, Zhejiang, Peoples R China 2.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China 3.Univ Lorraine, CNRS, Lab React & Proc Engn, F-54001 Nancy, France |
| 推荐引用方式 GB/T 7714 | Xu, Wei,Zhang, Ruoyu,Liu, Wei,et al. A Multiscale Investigation on the Mechanism of Shape Recovery for IPDI to PPDI Hard Segment Substitution in Polyurethane[J]. MACROMOLECULES,2016,49(16):5931-5944. |
| APA | Xu, Wei.,Zhang, Ruoyu.,Liu, Wei.,Zhu, Jin.,Dong, Xia.,...&Hu, Guo-Hua.(2016).A Multiscale Investigation on the Mechanism of Shape Recovery for IPDI to PPDI Hard Segment Substitution in Polyurethane.MACROMOLECULES,49(16),5931-5944. |
| MLA | Xu, Wei,et al."A Multiscale Investigation on the Mechanism of Shape Recovery for IPDI to PPDI Hard Segment Substitution in Polyurethane".MACROMOLECULES 49.16(2016):5931-5944. |
入库方式： OAI收割
来源：化学研究所
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