双侧链液晶聚硅氧烷的玻璃化过渡区和液晶相的偶极弛豫

3区工程技术 Q1 Materials Science

Journal of Polymer Science. Part B, Polymer Physics Pub Date : 1996-09-15 DOI:10.1002/(SICI)1099-0488(19960915)34:12<2067::AID-POLB12>3.0.CO;2-#

J. Ramos, J. Mano, D. Lacey, G. Nestor

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引用次数: 13

摘要

用热激发放电电流研究了两种侧链液晶聚硅氧烷[Si(Me) 2o] x [Si(Me)(R)O] y (R= (CH 2) 8 OPhCOOPh(Me)(CN)在玻璃过渡区和液晶相中的分子弛豫机制。这些结果与先前用介电弛豫光谱得到的结果进行了比较。观察到液晶相中存在两种弛豫机制，我们认为这可能与液晶相中介生部分的运动相对应。

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Dipolar relaxations in the glass transition region and in the liquid crystalline phase of two side‐chain liquid crystalline polysiloxanes

The molecular relaxation mechanisms in the glass transition region and in the liquid crystalline phase exhibited by two side-chain liquid crystalline polysiloxanes [Si(Me) 2 O] x [Si(Me)(R)O] y (R= (CH 2 ) 8 OPhCOOPh(Me)(CN) have been studied by Thermally Stimulated Discharge Currents. These results were compared with those previously obtained by dielectric relaxation spectroscopy. It was observed that two relaxation mechanisms were present in the liquid crystalline phase, and we suggest that these might correspond to the motions of the mesogenic moieties in the liquid crystalline phase.

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来源期刊

Journal of Polymer Science. Part B, Polymer Physics 工程技术-高分子科学

CiteScore

5.90

自引率

0.00%

发文量

审稿时长

2.1 months

期刊介绍： Since its launch in 1946 by P. M. Doty, H. Mark, and C.C. Price, the Journal of Polymer Science has provided a continuous forum for the dissemination of thoroughly peer-reviewed, fundamental, international research into the preparation and properties of macromolecules. From January 2020, the Journal of Polymer Science, Part A: Polymer Chemistry and Journal of Polymer Science, Part B: Polymer Physics will be published as one journal, the Journal of Polymer Science. The merged journal will reflect the nature of today''s polymer science research, with physics and chemistry of polymer systems at the heart of the scope. You can continue looking forward to an exciting mix of comprehensive reviews, visionary insights, high-impact communications, and full papers that represent the rapid multidisciplinary developments in polymer science. Our editorial team consists of a mix of well-known academic editors and full-time professional editors who ensure fast, professional peer review of your contribution. After publication, our team will work to ensure that your paper receives the recognition it deserves by your peers and the broader scientific community.