Get access

Partially crosslinked P(SMA-DMA-St) copolymer in situ modified RGB tricolor pigment particles for chromatic electrophoretic display

Authors

  • Wenlong Qin,

    1. MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Lab of Silicon Materials & Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
    Search for more papers by this author
  • Gang Wu,

    Corresponding author
    1. MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Lab of Silicon Materials & Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
    • Department of Polymer Science and Engineering, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, People's Republic of China
    Search for more papers by this author
  • Peipei Yin,

    1. MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Lab of Silicon Materials & Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
    Search for more papers by this author
  • Hongzheng Chen

    1. MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Lab of Silicon Materials & Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
    Search for more papers by this author

Abstract

RGB tricolor organic pigments were in situ modified by stearyl methacrylate-2-(dimethylamino)ethyl methacrylate-styrene random copolymer [P(SMA-DMA-St)] through solution polymerization. The modified particles were charged in tetrachloroethylene (TCE) with the aid of suitable charge control agent. The structure and electrophoretic property of ink particles were characterized by FTIR, TEM, PALS, et al. P(SMA-DMA-St) modification decreased the particles size and enhanced the suspending stability of the pigments in tetrachloroethylene due to the repulsive forces among the treated pigment particles resulting from the extending polyacrylate chain in the media. Partial crosslinking the P(SMA-DMA-St) on the pigment surface with ethylene glycol dimethacrylate (EGDMA) helped to increase the Zeta potential and electrophoresis mobility of RGB electrophoretic particles. The maximum values of the Zeta potential for red, green, and blue electrophoretic particles reached −36.2, −57.7, and −42.7 mV, respectively. The obtained RGB electrophoretic particles could be applied in the color/white dual-particle electronic ink together with charged TiO2 to show vivid color and white images under a DC electric field. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

Ancillary