文献类型：期刊文献

英文题名：Effect of electric field on phase behavior of polypeptide liquid crystals

作者：Chen, T; Lin, JP; Tian, XH; Liu, PH; Lin, SL; Lu, XW; Zhou, DF

机构：[1]E China Univ Sci & Technol, Dept Polymer Sci & Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Dept Appl Math, Shanghai 200237, Peoples R China

年份：2004

期号：1

起止页码：145

外文期刊名：ACTA POLYMERICA SINICA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000188968000030)】；

语种：英文

外文关键词：polypeptide; chain conformational change; electric field

摘要：Phase transitions of polymer liquid crystals may be induced not only by changes of temperature or polymer concentration, but also by external electric, magnetic or other orientational fields. In this paper the phase behavior of polypeptide liquid crystal solutions, such as PBLG/TCE and PBLG/CHCl3/TFA solutions,was studied in the presence of an external electric field. It was found that the liquid crystal phase was stabilized when the external electrical field was applied and the area of liquid crystal phase was broadened. Qualitatively, the experimental results are in good agreement with the theoretical results calculated by a lattice model previously. The information obtained may be used to develop new routes for processing rigid-flexible block copolymers with better mechanical properties and to construct molecular devices for processing and storing information.