Structure-property relationship of thermotropic liquid-crystalline vinyl polymers containing no traditional mesogen
文献类型：期刊论文
| 作者 | Guan, Yan; Chen, Xiaofang; Shen, Zhihao; Wan, Xinhua; Zhou, Qifeng |
| 刊名 | POLYMER
 |
| 出版日期 | 2009-01-28 |
| 卷号 | 50期号:3页码:936-944 |
| 关键词 | Hexagonal Columnar Mesophase (Phi(h)) Thermotropic Liquid-crystalline Property Liquid-crystalline Polymer |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2008.12.002 |
| 英文摘要 | A series of non-mesogenic vinyl monomers, 2,5-bis(alkoxycarbonyl)styrene, were synthesized and polymerized via free radical polymerization. The alkoxy groups were systematically varied to investigate the effects of their size and architecture on the thermotropic liquid-crystalline properties of the resultant polymers. Although no traditional mesogen was present in the macromolecular structure, all the polymers revealed stable hexagonal columnar liquid-crystalline phase at the temperatures well above their glass transitions when the molecular weights were high enough, as evidenced by a combinatory analysis of differential scanning calorimetry, polarized light microscopy, and one- and two-dimensional wide-angle X-ray diffraction techniques. For the polymers containing five carbon atoms in the alkoxy terminals, the temperatures of glass transition and mesophase formation decreased and the d-spacing value of mesophase increased as the methyl substituent moved away from the connecting phenyl ring. Increasing the number of methyl group or the size of the substituent had the same effect. In the case of polymers with Y-shaped alkoxy terminals, the larger the side groups, the lower the glass-transition temperature and mesophase formation temperature and the larger the d-spacing value of mesomorphic structure. (C) 2008 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000263344100026 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/67055]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wan, Xinhua |
| 作者单位 | Peking Univ, Coll Chem & Mol Engn, Minist Educ, Beijing Natl Lab Mol Sci,Key Lab Polymer Chem & P, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guan, Yan,Chen, Xiaofang,Shen, Zhihao,et al. Structure-property relationship of thermotropic liquid-crystalline vinyl polymers containing no traditional mesogen[J]. POLYMER,2009,50(3):936-944. |
| APA | Guan, Yan,Chen, Xiaofang,Shen, Zhihao,Wan, Xinhua,&Zhou, Qifeng.(2009).Structure-property relationship of thermotropic liquid-crystalline vinyl polymers containing no traditional mesogen.POLYMER,50(3),936-944. |
| MLA | Guan, Yan,et al."Structure-property relationship of thermotropic liquid-crystalline vinyl polymers containing no traditional mesogen".POLYMER 50.3(2009):936-944. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。