红白电子墨水微胶囊的制备

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.

Preparation of red/white electronic ink microcapsules

Functional gelatin carboxymethyl cellulose (CMC) microcapsules containing a red /white electrophoretic suspension have been prepared using a complex coacervatio n method. The optimized experimental conditions were identified. The results sho wed when the volume ratio of gelatin and CMC was 5∶1, the amount of surfactant sodium dodecyl sulfate (SDS) was 1.3-1.7g/L, the reaction temperature was 4.0℃, the stirring speed was 600-800r/min, and the pH was 3.5-3.8, narrow size distributions of microcapsules with transparent surfaces were obtained. Su ch microcapsules containing the red/white suspension showed a response time of 1.4s in electrophoretic displays with a direct current electric field.