| 电场对聚肽液晶相行为的影响 |
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| 引用本文： | 陈涛,林嘉平,田晓慧,刘培海,林绍梁,鲁习文,周达飞. 电场对聚肽液晶相行为的影响[J]. 高分子学报, 2004, 0(1): 145-148 |
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| 作者姓名： | 陈涛 林嘉平 田晓慧 刘培海 林绍梁 鲁习文 周达飞 |
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| 作者单位： | 华东理工大学高分子材料系,上海,200237;华东理工大学应用数学系,上海,200237 |
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| 基金项目： | 国家自然科学基金资助项目(基金号 50 2 73 0 11)，教育部博士点基金资助项目 (基金号 2 0 0 10 2 510 0 8) |
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| 摘 要： | 聚合物液晶的相转变不仅可以通过溶液温度或聚合物的浓度的改变来实现，也可以通过施加外电场、磁场等取向场来达到．在二氧六环、氯仿、间甲酚等支持聚肽a一螺旋构象的溶剂中，当PBLG(聚L-谷氨酸γ-苯甲酯)达到一定的浓度会形成胆甾型溶致液晶．对这种液晶施加强度足够
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| 关 键 词： | 聚肽 分子链构象转变 电场 |
| 修稿时间： | 2003-06-06 |
EFFECT OF ELECTRIC FIELD ON PHASE BEHAVIOR OF POLYPEPTIDE LIQUID CRYSTALS |
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| CHEN Tao ,LIN Jiaping+,TIAN Xiaohui+,LIU Peihai+,LIN Shaolia ng+,LU Xiwen+,ZHOU Dafei+. EFFECT OF ELECTRIC FIELD ON PHASE BEHAVIOR OF POLYPEPTIDE LIQUID CRYSTALS[J]. Acta Polymerica Sinica, 2004, 0(1): 145-148 |
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| Authors: | CHEN Tao LIN Jiaping+ TIAN Xiaohui+ LIU Peihai+ LIN Shaolia ng+ LU Xiwen+ ZHOU Dafei+ |
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| Affiliation: | CHEN Tao 1,LIN Jiaping+1,TIAN Xiaohui+1,LIU Peihai+2,LIN Shaolia ng+1,LU Xiwen+2,ZHOU Dafei+1 |
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| Abstract: | Phase transitions of polymer liquid crystals may be i nduced not only by changes of temperature or polymer concentration,but also b y external electric,magnetic or other orientational fields.In this paper the pha se behavior of polypeptide liquid crystal solutions,such as PBLG/TCE and PBLG/CH Cl 3/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 electr ical field was applied and the area of liquid crystal phase was broadened.Qualit atively,the experimental results are in good agreement with the theoretical resu lts calculated by a lattice model previously.The information obtained may be use d to develop new routes for processing rigid flexible block copolymers with be tter mechanical properties and to construct molecular devices for processing and storing information. |
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| Keywords: | Polypeptide Chain conformational change Electric fi eld |
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