Model for Estimation of the Stability of Emulsions in a Cream Layer

Abstract

A model for use in the estimation of the stability of emulsions in cream layers is proposed. Stability was assessed by the parameter a_c, defined as the ratio of the kinetic energy of an emulsion particle to that of a molecule. Based on the DLVO theory and Stokes' law, the kinetic energy of a particle needed for it to cross over a potential barrier was calculated by consideration of the balance of forces working on the particle. The a_c value was a useful index for estimation of the stability of emulsions, and represented the empirically known effects of the properties of particles and the medium on stability.