注册 登录 English Version 中国高分子学术平台
研究论文 | 更新时间:2021-03-19
    • 氰乙基纤维素/二甲基乙酰胺液晶溶液的研究

    • STUDIES ON LYOTROPIC LIQUID CRYSTALLINE SOLUTIONS OF CYANOETHYL CELLULOSE/DIMETHYL ACETAMIDE

    • 黄勇

      ,  

      陈鸣才

      ,  

      李历生

      ,  
    • 高分子学报   1989年第1期 页码:70-74
    • 纸质出版日期:1989-2-20

    扫 描 看 全 文

  • 引用本文

    阅读全文PDF

  • 黄勇, 陈鸣才, 李历生. 氰乙基纤维素/二甲基乙酰胺液晶溶液的研究[J]. 高分子学报, 1989,(1):70-74. DOI:

    HUANG Yong, CHEN Ming-cai, Li Li-sheng. STUDIES ON LYOTROPIC LIQUID CRYSTALLINE SOLUTIONS OF CYANOETHYL CELLULOSE/DIMETHYL ACETAMIDE[J]. Acta Polymerica Sinica, 1989,(1):70-74. DOI:

  •  
  •  
    论文导航

    摘要

    本文利用Abbe折射仪,热台偏光显微镜,小角光散射等方法研究了氰乙基纤维素/二甲基乙酰胺液晶溶液的形成,形态结构和某些性质。溶液随浓度的增加,从各向同性态经过两相共存状态,转变成为单一的液晶态。该液晶是胆甾型的。溶液的双折射Δn随浓度的增加或温度的降低而增大。在无外力作用时,液晶相由许多无规分布的取向微区组成。液晶溶液受切应力后形成“条纹结构”,大分子链沿切应力方向取向,并在各条纹中排列有序。

    Abstract

    The formation, texture and some properties of cyanoethyl cellulose (CEC)/dimethyl aceta-mide (DMA) mesomorphic solutions were studied. The solutions could transform from isotro-pic to anisotropic states through a biphasic range as increasing the concentration. The liquid crystal was cholesteric. Birefringence of the solutions increased with increasing the concentration or dropping of the temperature. The mesomorphic aggregates were composed of many domains whose orientation directions were different when the solutions were in nature. The liquid crystalline solutions which had been sheared could form"band-like"structure in which mole-cular chains oriented nearly along the lines of the shear. The orientatio directions of the molecular chains were different slightly between the neighboring bands.

    关键词

    氰乙基纤维素; 液晶溶液; 双折射; 临界温度; 临界浓度; 胆甾型的; 条纹结构

    Keywords

    更多指标>

    26

    浏览量

    58

    下载量

    1

    CSCD

    文章被引用时,请邮件提醒。
    提交
    工具集
    下载
    参考文献导出
    分享
    收藏
    添加至我的专辑

    相关文章

    氰乙基纤维素溶致性液晶的研究
    丁酸壳聚糖液晶的临界行为研究
    甲壳素类液晶高分子的研究——用CD谱研究N-邻苯二甲酰化壳聚糖溶致胆甾相的形成临界浓度
    支化侧链偶氮聚电解质的光致二向色性和表面起伏光栅
    聚碳酸酯与苯乙烯-丙烯腈共聚物共混体系相容性及其对光学性能的影响

    相关作者

    暂无数据

    相关机构

    暂无数据
    0