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多检测GPC/SEC技术在高分子表征中的应用 Ⅲ.新型聚炔类梳形液晶高分子

Use of Multiple Detectors GPC/SEC in Polymer Characterization Ⅲ. Novel Liquid Crystalline Polymer

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【作者】 黄怿卜乐炜张德震苏诚伟徐种德LAMWingYip唐本忠

【Author】 HUANG Yi, BU Le wei, ZHANG De zhen, SU Cheng wei, XU Zhong de (East China University of Science and Technology, Shanghai 200237, China) LAM Wing Yip, TANG Benz hong (The Hong Kong University of Science & Technology, Kowloon, Hong Kong, China

【机构】 华东理工大学材料科学与工程学院高分子物理教研组!上海200237华东理工大学材料科学与?

【摘要】 采用体积排斥色谱法/ 示差折光指数/ 直角激光光散射/ 示差粘度三检测联用技术表征聚炔类梳形液晶高分子,阐述了在溶液中分子尺寸与结构的关系,计算了无扰尺寸( < r20 > / M)1/2 和Flory 特征比C∞,讨论了侧基的柔性和体积对主链柔性程度的影响。

【Abstract】 Novel liquid crystalline polymers of polyacetylenes with comb structure were studied by SEC/RI/RALLS/DV. The relationship between the molecular size and the polymer structure was formulated, and the theta condition of two samples was obtained. Flory′s characteristic ratios C ∞ and unperturbed dimensions (<r 2 0>/M) 1/2 were calculated. The effect of the side group size on chain flexibility was discussed. The results show that the technique of SEC/RI/RALLS/DV is a useful means for characterizing the novel liquid crystalline polymer of polyacetylenes with comb structure, which can not be effectively characterized by conventional SEC.

  • 【文献出处】 功能高分子学报 ,JOURNAL OF FUNCTIONAL POLYMERS , 编辑部邮箱 ,1999年04期
  • 【分类号】O631
  • 【被引频次】2
  • 【下载频次】187
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