红白电子墨水微胶囊的制备  

Preparation of red/white electronic ink microcapsules

作　　者：李美新[1] 乐园[1] 陈建峰[1] 

机构地区：[1]北京化工大学化学工程学院,北京100029

出　　处：《北京化工大学学报（自然科学版）》2009年第4期25-28,共4页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：国家"863"计划(2008AA03A332);国家自然科学基金(20821004)

摘　　要：用复合凝聚法制备了包覆红白电泳显示液的明胶-羧甲基纤维素(CMC)电子墨水微胶囊。考察了壁材用量、十二烷基硫酸钠(SDS)用量、反应温度、搅拌速度对微胶囊粒径的分布及其形貌的影响。实验结果表明,在明胶与羧甲基纤维素的体积比为5∶1,SDS用量为1.3～1.7g/L,反应温度为40℃,搅拌速度为600～800r/min,pH值为3.5～3.8的条件下可以制得具有透明囊壁且粒度分布较均匀的微胶囊。微胶囊中的粒子在直流电场作用下发生移动,响应时间为14s。Functional gelatin-carboxymethyl cellulose （CMC） microcapsules containing a red/white electrophoretic suspension have been prepared using a complex coacervation method. The optimized experimental conditions were identified. The results showed when the volume ratio of gelatin and CMC was 5 ： 1, the amount of surfactant sodium dodecyl sulfate （SDS） was 1.3 - 1.7 g/L, the reaction temperature was 40℃, the stirring speed was 600 - 800 r/min, and the pH was 3.5 - 3.8, narrow size distributions of microcapsules with transparent surfaces were obtained. Such microcapsules containing the red/white suspension showed a response time of 14 s in electrophoretic displays with a direct current electric field.

关 键 词：电子显示 微胶囊 表面活性剂 

分 类 号：TP334.8[自动化与计算机技术—计算机系统结构] TN27[自动化与计算机技术—计算机科学与技术]