Spontaneous Oil-in-Water Emulsification Induced by Charge-Stabilized Dispersions of Various Inorganic Colloids

On the preparation of lecithin-stabilized oil-in-water emulsions by multi-stage premix membrane emulsification

Interfacial charge transport in water-in-oil microemulsions stabilized by ionic-non-ionic surfactant mixtures.

Interfacial charge transport and mobility have been studied in system-spanning nanodroplet clusters formed in water-in-oil microemulsions stabilized by non-ionic-ionic surfactant mixtures. An unexpectedly large reduction in the counterion mobility was derived from a two-step adsorption process which described the Langmuir-plot-like conductivity isotherm remarkably well. It also conformed very s...

Oil-water de-emulsification using ultrasonic technology.

In this paper an oil-water de-emulsification process within large tanks using ultrasonic technology is presented. As the device would operate in hazardous areas, it should not consume an excessive amount of electrical power. Hence, the paper investigates the suitable oil-water concentrations (10-90% concentrations in step of 10%) which would lead to the fastest separation while consuming the mi...

Hydrodynamic and Colloidal Interactions in Concentrated Charge-Stabilized Polymer Dispersions.

Hydrodynamic and colloidal interactions are explored in concentrated, charge-stabilized colloidal dispersions by measuring the dependence of rheology (e.g., low and high-shear viscosity, high-frequency viscosity, and modulus) and self-diffusivity on salt content, particle size, and concentration. Model, sulfonated polystyrene lactices of varying diameter are prepared and investigated by shear r...

Long-time dynamics of concentrated charge-stabilized colloids.

Dynamic light scattering was used to study the dynamic structure factor, S(q,t), of suspensions of charged colloidal silica spheres over the full colloidal time range. We show that a dynamic scaling relation for S(q,t) found by Segrè and Pusey [Phys. Rev. Lett. 77, 771 (1996)10.1103/PhysRevLett.77.771] for hard spheres, relating long-time and short-time dynamics, and collective and self-diffusi...