纳米TiO2电泳粒子表面电荷的可控制备

doi:10.3724/SP.J.1077.2012.00649

无机材料学报 ›› 2012, Vol. 27 ›› Issue (6): 649-654.DOI: 10.3724/SP.J.1077.2012.00649 CSTR: 32189.14.SP.J.1077.2012.00649

纳米TiO₂电泳粒子表面电荷的可控制备

柳志杰, 李祥高, 王世荣

(天津大学化工学院, 天津300072)

收稿日期:2011-07-11 修回日期:2011-09-02 出版日期:2012-06-20 网络出版日期:2012-05-07
作者简介:柳志杰(1986-), 女, 硕士研究生. E-mail: liuzhijiesyfx@126.com
基金资助:
国家863计划(2008AA03A332); 天津市科技支撑计划(11ZCKFGX01700)

Preparation of TiO₂ Nano-particles with Controllable Surface Charges for Electrophoretic Display

LIU Zhi-Jie, LI Xiang-Gao, WANG Shi-Rong

(School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China)

Received:2011-07-11 Revised:2011-09-02 Published:2012-06-20 Online:2012-05-07
About author:LIU Zhi-Jie. E-mail: liuzhijiesyfx@126.com
Supported by:
National High Technology Research and Development Program of China (2008AA03A332); Tianjin Science and Technology Commission (11ZCKFGX01700)

摘要/Abstract

摘要： 分别以阴、阳离子表面活性剂和聚合物作为表面修饰剂, 以四氯乙烯、十二烷基苯和Isopar H作为分散介质, 研究纳米TiO₂电泳粒子表面荷电性质及其荷电量的可控制备. 研究结果表明，阳离子表面活性剂修饰的TiO₂粒子的ξ电位在四氯乙烯中呈负性, 在十二烷基苯和Isopar H中呈正性; 阴离子表面活性剂的修饰产物则相反. 进一步研究了十二烷基苯磺酸钠、十六烷基三甲基溴化铵和苯乙烯/二乙烯苯修饰的TiO₂粒子体系中电荷控制剂的浓度对TiO₂粒子荷电量的影响. 结果表明TiO₂电泳粒子的ξ电位在电荷控制剂的临界胶束浓度附近存在极小值, 并随着浓度的增加而有规律地变化, 但荷电性质不改变. 根据这一规律可实现对粒子表面电荷的可控制备.

关键词: TiO₂粒子, 荷电性质, 荷电量, 可控制备, 电泳

Abstract: Preparation of TiO₂ nano-particles with controllable surface charges for electrophoretic display was investigated in ethylene tetrachloride, Isopar H and dodecylbenzene, in which TiO₂ nano-particles were modified by anionic surfactants, cationic surfactants and polymers, respectively. The research results showed that TiO₂ nano-particles modified by cationic surfactants had negative charges in ethylene tetrachloride, while it had positive charges in Isopar H and dodecylbenzene, the nano-particles modified by anionic surfactants had the opposite character. The influence of concentration of charge control agents on TiO₂nano-particles surface charges was discussed, in which TiO₂ nano-particles were modified by sodium dodecylbenzenesulphonate, hexadecyl trimethyl ammonium bromide and styrene/divinylbenzene, respectively. It was shown that ξ potential of TiO₂ nano-particles had a minimum value near the critical micelle concentrations of the charge control agents, and a regular change with the increasing concentration, while the property of ξ potential was still maintained. So, preparation of controllable surface charges of TiO₂ nano-particles can be achieved.v

Key words: TiO₂ particles, charge property, charge concentration, controllable preparation, electrophoresis

中图分类号:

TQ134
O648

柳志杰, 李祥高, 王世荣. 纳米TiO₂电泳粒子表面电荷的可控制备[J]. 无机材料学报, 2012, 27(6): 649-654.

LIU Zhi-Jie, LI Xiang-Gao, WANG Shi-Rong. Preparation of TiO₂ Nano-particles with Controllable Surface Charges for Electrophoretic Display[J]. Journal of Inorganic Materials, 2012, 27(6): 649-654.

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纳米TiO₂电泳粒子表面电荷的可控制备

Preparation of TiO₂ Nano-particles with Controllable Surface Charges for Electrophoretic Display

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