摘要
以明胶-阿拉伯树胶为壁材,四氯乙烯为分散介质,硬脂酸改性的TiO2为显示颗粒,采用复合凝聚法制备了红白显示的电子墨水微胶囊。讨论了表面活性剂十二烷基硫酸钠(SDS)对复合凝聚相生成过程的影响,并分析了Span 80用量对微胶囊形貌的影响。结果表明,SDS与明胶间形成的复合凝聚相具有很高的表面活性。此外,Span 80体积分数为2.0%～3.0%时,制备的微胶囊囊壁光滑、均一,平均粒径约为60μm。制备的微胶囊在电场强度为2.5×106V/m时,具有良好的电场响应行为及可逆移动性。
The electronic ink microcapsules containing TiO2 nanoparticles modified with stearic acid dispersed in tetrachloroethylene（TCE） were prepared by complex coacervation using gelatin-gum acacia as wall materials.The influence of SDS on complex coacervation was discussed.The influence of Span 80 on the surface morphology of the electronic ink microcapsules was also studied.The results show that high surface activity existed between SDS and gelatin during complex coacervation.When the volume fraction of Span 80 increased to 2.0%～3.0%（based on the volume of TCE）,the microcapsules could be prepared with regular morphology and transparent and smooth surface,the average diameter being ~60 μm.The particles in the microcapsules possessed reversible response to direct current under the electric field intensity of 2.5×106 V/m.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2012年第5期443-446,452,共5页
Fine Chemicals
基金
西京学院自然科学基金(10B01)~~
关键词
电子墨水
界面张力
形貌
复合凝聚法
表面活性剂
electronic ink
surface tension
morphology
complex coacervation
surfactants
