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Proceedings Paper

Preparation and characterization of high contrast electrophoretic display suspension containing charged black-and-white nanoparticles
Author(s): Xiao-Nan Yao; Jian-Ping Wang; Xing-Xiang Zhang; Xue-Chen Wang
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Paper Abstract

In this study, TiO2 nanoparticles with sizes ranging from 300- 400nm were modified by two-step dispersion polymerization using poly (styrene-co-divinylbenzene)-methyl methacrylate [P (St-co-DVB)-MMA] as shell. And core, carbon black (CB) nanoparticles with size ranging from 30-50nm and polymer shell poly (methacrylic acid) [PMAA] were prepared by grafting polymerization, too. Modified nanoparticles were characterized on structure, mean particle size and size distribution, morphology with FT-IR, TEM, and image analyzer. Furthermore, modified TiO2 as negatively charged electrophoretic particles and CB nanoparticles as cationically charged electrophoretic particles were homodispersed in tetrachloroethylene (TCE) to make the electrophoretic display suspension with Span-80 as dispersant and OLOA 1200 as charge control agent. The zeta potential and mobility of white (TiO2) and black (CB) charged particles were measured to be -61.4 mV, 9.50×10-6 cm2 /V s and 12.8 mV, 1.98×10-6 cm2 /V s by using an electrophoresis test device, respectively. Final, the electric response behaviors of the electrophoretic display suspension were studied under electrostatic field. The black-and-white particles moved quickly and reversibly inside ITO electrodes while the electric field alternated.

Paper Details

Date Published: 20 October 2009
PDF: 9 pages
Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 749352 (20 October 2009); doi: 10.1117/12.839708
Show Author Affiliations
Xiao-Nan Yao, Tianjin Polytechnic Univ. (China)
Jian-Ping Wang, Tianjin Polytechnic Univ. (China)
Xing-Xiang Zhang, Tianjin Polytechnic Univ. (China)
Xue-Chen Wang, Tianjin Polytechnic Univ. (China)

Published in SPIE Proceedings Vol. 7493:
Second International Conference on Smart Materials and Nanotechnology in Engineering
Jinsong Leng; Anand K. Asundi; Wolfgang Ecke, Editor(s)

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