采用硬脂酸对TiO2纳米颗粒进行表面改性处理,以明胶-阿拉伯树胶为壁材,通过 一步复凝聚法制备了白色电子墨水微胶囊.傅立叶变换红外光谱仪及动态光散射仪分析表明,改性后的TiO2在四氯乙烯中具有良好的分散性.对分散体系进行微胶囊化处理后,颗粒能够均匀而稳定地分布在微胶囊内.调节明胶-阿拉伯胶用量、滴酸速度及浓度等,获得了无粘连、囊壁光滑、厚度可控的微胶囊.在10 V/靘的直流电场作用下,胶囊内改性TiO2纳米颗粒表现出良好的电场响应可逆移动特征.
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