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电场对聚肽液晶相行为的影响 被引量:4

EFFECT OF ELECTRIC FIELD ON PHASE BEHAVIOR OF POLYPEPTIDE LIQUID CRYSTALS
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摘要 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. 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.
出处 《高分子学报》 SCIE CAS CSCD 北大核心 2004年第1期145-148,共4页 Acta Polymerica Sinica
基金 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)
关键词 电场 聚肽 相行为 聚合物液晶 相转变 分子链构象 Polypeptide, Chain conformational change, Electric fi eld
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二级参考文献5

  • 1Lin Jiaping,Polym,1995年,44卷,641页
  • 2Lin Jiaping,Polym Prepr Japan,1994年,43卷,1481页
  • 3Lin Jiaping,Polym,1998年,39卷,5495页
  • 4Lin Jiaping,Polym,1997年,38卷,4837页
  • 5Lin Jiaping,Macromolecules,1996年,29卷,2584页

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同被引文献50

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