Phase structure and transitions in a poly(methyloctadecylsilane) oligomer
文献类型：期刊论文
| 作者 | Wu ZM ; Xie FC ; Hu ZJ ; Liu JP ; Du BY ; He TB |
| 刊名 | polymer
 |
| 出版日期 | 2001 |
| 卷号 | 42期号:3页码:1047-1053 |
| 关键词 | LIQUID-CRYSTALLINE POLYSILANE TO-COIL TRANSITION POLYETHERS |
| ISSN号 | 0032-3861 |
| 通讯作者 | he tb |
| 中文摘要 | a poly(methyloctadecylsilane) oligomer was synthesized by a typical wurtz coupling reaction. upon cooling, three transitions were observed at temperatures of 39.9, 37.5 and 33.9 degreesc at a rate of 2.5 degreesc/min in differential scanning calorimetry (dsc). the first transition, with enthalpy change of 0.47 kt/mol and supercooling of 0.2 degreesc, was characteristic of the conformational change in the si-si backbone into an all-trans conformation, which was detected by temperature-dependent fourier transform infrared (ft-fr) spectroscopy. the second and the third transitions with large supercooling were identified as the formation of two-dimensional hexagonal crystal packing and three-dimensional two-chain orthorhombic crystal packing, respectively. the crystal structure was determined by the combination of waxd and transmission electron microscopy (tem) experiments. (c) 2000 elsevier science ltd. all rights reserved. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000089962500022 |
| 公开日期 | 2010-11-04 |
| 源URL | [http://202.98.16.49/handle/322003/21003]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Wu ZM,Xie FC,Hu ZJ,et al. Phase structure and transitions in a poly(methyloctadecylsilane) oligomer[J]. polymer,2001,42(3):1047-1053. |
| APA | Wu ZM,Xie FC,Hu ZJ,Liu JP,Du BY,&He TB.(2001).Phase structure and transitions in a poly(methyloctadecylsilane) oligomer.polymer,42(3),1047-1053. |
| MLA | Wu ZM,et al."Phase structure and transitions in a poly(methyloctadecylsilane) oligomer".polymer 42.3(2001):1047-1053. |
入库方式： OAI收割
来源：长春应用化学研究所
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