Encapsulation of two-phase core materials into electronic ink nanocapsules and the control of the nanocapsules size

In this paper, two-phase electronic ink nanocapsules with carbon black nanoparticles modified by SiO₂ as dispersant phase and the mixture of tetrachloroethylence and SPAN-80 as dispersant agent were obtained via miniemulsion polymerization. The obtained nanocapsule particle sizes were in the region of about 142-1 106 nm. We investigated the effects of SiO₂ modification on the particle sizes and zeta potential change of carbon black nanoparticles. Meanwhile, the behaviors of the modified carbon black particles under direct current electric field were also studied. In addition, the influences of the amount of SDS and PVA on the particle sizes of nanocapsules were investigated, respectively.