Ultracentrifugal stability of oil-in-oil emulsions

Abstract

Demulsification of emulsions occurs as a two-stage process (1). In the first stage, flocculation, the droplets of the disperse phase form aggregates in which the drops have not lost their identity (such aggregation is often reversible). In the second stage, termed coalescence, each aggregate combines to form a single drop. This is an irreversible process, leading to a decrease in the number of dispersed droplets and finally to the ultimate separation of dispersed droplets as a bulk phase, i. e., so-called complete breaking of emulsion