PREPARATION OF MICROSPHERES WITH LIQUID CRYSTAL RESPONSES
PREPARATION OF MICROSPHERES WITH LIQUID CRYSTAL RESPONSES
复制标题
具有液晶响应的微球的制备
DOI：
10.1080/00986440108912862
复制
发表时间：
2001
影响因子：
2.5
通讯作者：
Y. Hatate
中科院分区：
文献类型：
--
作者：
M. Yoshida;Xinghe Fan;H. Yoshizawa;T. Itahara;Y. Kawano;Y. Uemura;Y. Hatate
合成了一种侧链上同时含有羧基对苯甲酰氧基苯甲酸酯和羧基（S）-（-）-2-甲基丁酯的铁电液晶单体。利用液晶和苯乙烯单体形成微球基体，通过分散或悬浮聚合法制备微球。在这项研究中，我们的特点是详细的物理化学性质，热响应，或在微球的电光响应。我们证明了以下结果：（1）采用分散聚合法和悬浮聚合法制备的微球的体均粒径分别为1.5 μ m和45 μm;（2）所制备的微球在一定温度下具有液晶性;（三）通过共聚液晶和苯乙烯单体制备的微球向液晶相的相变温度可以是随着苯乙烯单体浓度的增加，微球的光电响应降低;（4）在指定电压下，微球具有明显的光电响应。
We synthesized a ferroelectric liquid crystal monomer possessing both carboxyl p-benzolxy-benzoate and carboxyl (s)-(-)-2-methylbutyl ester in its side chain. The liquid crystal and styrene monomers were utilized to form matrices of microspheres prepared by the dispersion or suspension polymerization. In this study, we characterized in detail physicochemical properties, thermo-responses, or electro-optical responses in the microspheres. We demonstrated the following results: (1) the volume-averaged diameters of microspheres prepared by the dispersion or suspension polymerization were of 1.5 or 45 μm, respectively, (2) the microspheres prepared showed liquid crystal abilities at the prescribed temperature, (3) the phase transition temperatures toward the liquid crystal phase of the microspheres prepared by copolymerizing the liquid crystal and styrene monomers could be decreased with increasing styrene monomer concentrations, and (4) the microspheres obtained remarkably exhibited electro-optical responses at the appointed voltage.