Characteristic of Electrostatic Dispersion for O/W Type and W/O Type Emulsions

Abstract

Characteristics of electrostatic dispersion and formation of charged uniformly-sized droplets for W/O and O/W type emulsions were investigated experimentally in the atmosphere. Both types of emulsion showed pseudo-plastic fluid behavior. A non-uniform electric field was formed by configuration of an earthed electrode of copper plate and a metal nozzle to which a positive DC voltage was applied. Feed rate of the emulsions in the experiments was in the range of single drop formation. Characteristics for formation frequency of charged uniformly-sized droplets changed significantly, depending on the physical properties of the emulsions.
Empirical correlations for droplet size produced in the electric field were proposed for each type of emulsion used.