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明胶-阿拉伯树胶电子墨水微胶囊显示性能优化 被引量:1

Optimical Display Property of Microencapsulated Electronic Inks by Complex Coacervation
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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。详细讨论了TiO2用量对反射性能的影响,讨论了Span80用量对分散体系稳定性的影响。结果表明:随着电荷控制剂Span80用量的增加,颗粒的Zeta电势和电泳淌度随之增加,使得分散体系的稳定性增加。当Span80浓度为3.0%时,分散体系长时间放置,无沉降发生。制备的微胶囊涂膜后,器件的对比度及分辨率均得到了良好改善。同时,驱动电压可达2.5 V/μm,响应时间降低到150ms。 The electronic ink microcapsules containing TiO2 nanoparticles modified with stearic acid dispersed in Tetrachloroethylene(TCE)were prepared by complex coacervation with one step method using Gelatin-Gum acacia as wall materials,and Span80 was used as stabilizer.In order to enhance the display properties of the microencapsulated electronic ink,the influence of the concentration of Span80 on the dispersion stability was also investigated.The results indicated that the increase of the concentration of Span 80 can enhance the stability of the dispersion.The suspension was able to be kept stable for a long time at the concentration of 3.0% of span80.After supporting the microcapsules on the ITO glass,the contrast and the resolution of prototype were evidently improved.The electric field was decreased to 2.5 V/μm,and the response time was 150 ms.
出处 《液晶与显示》 CAS CSCD 北大核心 2012年第2期182-186,共5页 Chinese Journal of Liquid Crystals and Displays
基金 国家自然科学基金(No.50272054) 西京学院自然科学基金(No.10B01)
关键词 电子墨水 TIO2 硬脂酸 微胶囊 复凝聚法 electronic ink TiO2 stearic acid microcapsule complex coacervation
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共引文献21

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