Dispersibility and Charge Property of Different Surface Modified Titanium Dioxide as Electrophoretic Particles

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To prepare stable electrophoretic ink (E Ink) contains titanium dioxide particles, oil soluble red, dispersant and tetrachloroethylene (TCE), the modification of organic and inorganic material onto the particle surface was investigated. Modified particles were characterized by measurement of X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FT-IR) to confirm the composites and structures. The electrophoretic properties of sample in TCE were investigated by static sedimentation experiment and electrophoresis instrument. The type of inorganic and organic materials used for the surface modification influence dispersibility and charge property of particles. On the whole, organic modified particles especially modified by anionic surfactant show better properties. The process conditions were investigated in detail using SDBS as the modifier. The dispersibility and charge property have significantly improved in optimized modifying condition that the proportion of surfactant is 15%, pH is 6 and reaction time is 1 hour which means SDBS modified TiO2 is suitable for electrophoretic particles.

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Periodical:

Advanced Materials Research (Volumes 11-12)

Main Theme:

Edited by:

Masayuki Nogami, Riguang Jin, Toshihiro Kasuga and Wantai Yang

Pages:

563-566

DOI:

10.4028/www.scientific.net/AMR.11-12.563

Citation:

X. H. Peng et al., "Dispersibility and Charge Property of Different Surface Modified Titanium Dioxide as Electrophoretic Particles", Advanced Materials Research, Vols. 11-12, pp. 563-566, 2006

Online since:

February 2006

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$35.00

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[1] 0 sufactant /% Settle rate 20 30 40 50 Response Time /s.

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[1] 0 pH value Settle rate 20 30 40 50 60Response Time /s Fig. 3 Effect of modification condition to SDBS (a) (c) (b).

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