| 甲基氰乙基纤维素溶致性液晶的研究 |
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| 引用本文： | 巫炳坤,蒋苏洪,黄勇. 甲基氰乙基纤维素溶致性液晶的研究[J]. 广州化学, 1991, 0(2) |
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| 作者姓名： | 巫炳坤 蒋苏洪 黄勇 |
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| 基金项目： | 中国科学院，国家自然科学基金 |
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| 摘 要： | 甲基氰乙基纤维素在二氯乙酸(DOA)中能形成溶致性液晶。本文利用FTIR仪、阿贝折射仪以及偏光显微镜等手段,研究了该液晶溶液相转变过程中分子间的相互作用,折光行为,以及液晶相织构等的变化。发现相转变时分子间的相互作用发生大的变化。液晶相由许多小的取向区域组成,各小取向区域的取向程度和方向不同,随着浓度的提高,液晶内的有序程度逐渐提高,各小取向区域的取向方向逐渐趋于一致,总的取向度随之升高。
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STUDY ON THE LYOTROPIC LIQUID CRYSTAL OF METHYLCYANOETHYL CELLULOSE |
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| Abstract: | Methyl-cyanoethyl Cellulose MCEC can form lyotropic mesophase in dichloroacetic acid (DCA). In this study, the molecular interactions in the solution are studied by Fourier transform infrared spectroscopy (FTIR) . The two principal refractive indices of birefringent concentrated solutions of MCEC in DCA are determined by an Abbe' refractometer with a rotatable polarizer mounted on the eyepiece. The characteristic textures of the mesophase are studied under different conditions by means of a polarized light microscope with a hot stage. |
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