Dispersion stability of polyelectrolyte-wrapped carbon black particles in a highly fluorinated solvent
관리자2018-05-03조회 2292
The dielectric medium used in electrophoretic displays (EPDs) is required to be an environmentally
friendly solvent with high density, low viscosity, and a large electric constant. Hydrofluoroether,
a highly fluorinated solvent with eco-friendly characteristics, is regarded as a
viable alternative medium for EPDs, owing to the similarity of its physical properties to those
of the conventional EPD medium. Surface modification of particles is required, however, in
order for it to disperse in the charged solvent. Also, positive/negative charges should be present
on the particle surface to enable electrophoretic behavior. In this study, carbon black particles
wrapped with positively charged nitrogen (N-CBs) were fabricated by a simple hydrothermal
process using a poly(diallyldimethylammonium chloride) solution as a black coloring
agent for the EPD. The dispersion behavior of N-CBs was investigated in various solvents.
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