Phase Transition of Side Chain Liquid Crystal Polyecrylate Studied by Positron Annihilation Lifetime Spectra
文献类型：期刊论文
| 作者 | Wang Wenhua1; Wei Long1; Zhang Tianbao1; He Liu2; Zhang Shufan2; Qi Zongneng2 |
| 刊名 | ACTA PHYSICO-CHIMICA SINICA
 |
| 出版日期 | 1996 |
| 卷号 | 12期号:8页码:688-692 |
| 关键词 | Positron Annihilation Liquid Crystal Polymer Free-volume |
| ISSN号 | 1000-6818 |
| DOI | 10.3866/PKU.WHXB19960804 |
| 英文摘要 | The results of positron annihilation studies on the side-chain polymer liquid crystals were obtained as a function of temperature. It is indicated that thermotropic liquid crystal has two phase transition points near 40 degrees C and 76 degrees C respectively. It is suggested that the first phase transition point is correspondent to the melting point of specimen and the second one is clearing point at which liquid crystal phase transits isotropic liquid phase. It can be concluded by the changes of Free-Volume at the phase transition points that the smectic state S-A is in better ordered state than the other liquid crystals. The difference in the curves of o-Ps life-time with temperature between the liquid crystal and the liquid crystal polymer was explained. |
| 语种 | 英语 |
| WOS记录号 | WOS:000207600100004 |
| 出版者 | PEKING UNIV PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/74039]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang Wenhua |
| 作者单位 | 1.Acad Sinica, Inst High Energy Phys, Lab Nucl Anal Tech, Beijing 100080, Peoples R China 2.Acad Sinica, Inst Chem, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Wenhua,Wei Long,Zhang Tianbao,et al. Phase Transition of Side Chain Liquid Crystal Polyecrylate Studied by Positron Annihilation Lifetime Spectra[J]. ACTA PHYSICO-CHIMICA SINICA,1996,12(8):688-692. |
| APA | Wang Wenhua,Wei Long,Zhang Tianbao,He Liu,Zhang Shufan,&Qi Zongneng.(1996).Phase Transition of Side Chain Liquid Crystal Polyecrylate Studied by Positron Annihilation Lifetime Spectra.ACTA PHYSICO-CHIMICA SINICA,12(8),688-692. |
| MLA | Wang Wenhua,et al."Phase Transition of Side Chain Liquid Crystal Polyecrylate Studied by Positron Annihilation Lifetime Spectra".ACTA PHYSICO-CHIMICA SINICA 12.8(1996):688-692. |
入库方式： OAI收割
来源：化学研究所
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