沉淀聚合法制备电泳显示白色球形复合粒子的机理(英文)  

Mechanism of Preparing White ElectrophoreticComposite Spherical Particles by Precipitation Polymerization

作　　者：冯宇光[1] 滕枫[1] 黄世华[1] 

机构地区：[1]发光和光信息教育部重点实验室,北京交通大学光电子技术研究所,北京100044

出　　处：《液晶与显示》2011年第3期285-295,共11页Chinese Journal of Liquid Crystals and Displays

摘　　要：基于二氧化钛的特性和4-乙烯基吡啶的功能,利用沉淀聚合法在甲醇中合成出二乙烯基苯-苯乙烯-4-乙烯基吡啶共聚物包覆的二氧化钛多核的表面光滑的球形粒子。利用DSC和TG检测了聚合效果,通过傅里叶红外光谱证实了聚合物的结构单元,利用SEM观察了复合粒子的表面,获得了具有稳定性、表面光滑的球形微粒。相应的聚合机理通过分析一系列制备核壳微球方法所得产物的SEM照片和改变一些参数所得的结果得以证实。分散的顺序和4-乙烯基吡啶的用量决定了生成复合球形微粒的机理。进而,通过溴代烷烃和在甲醇中沉淀聚合产物表面的4-乙烯基吡啶化合而成的季铵盐证实了复合微粒的电泳特性。Under specific property of titanium dioxide and 4-vinylpyridine,titanium dioxide multi-core and poly（divinyl-benzene-styrene-4-vinyl pyridine） shell hybrid composite spherical and smooth particles were prepared in methanol by precipitation polymerization.DSC and TG had detected polymerizing effect,structure unit of polymer was confirmed by FT-IR,and SEM took photographs of composite microsphere.As a result,the stable spherical and smooth particles were obtained.The corresponding mechanism was confirmed by SEM photographs and changing some parameters of core/shell microspheres prepared in a series of methods.The dispersing order and amount of 4-vinylpyridine dominated the mechanism of forming composite spherical particle.Then,the electrophoretic property of the composite particle was verified with a quaternary ammonium salt combined with hydrocarbon bromide and pyridyl covered on the surface of microsphere prepared in methanol by precipitation polymerization.

关 键 词：合成 核-壳聚合物 交联 颜料 界面 

分 类 号：TN104.3[电子电信—物理电子学]