Abstract
The stability of colloidal dispersions in apolar media is reviewed beginning with dilute dispersions. A criterion for the definition between dilute and concentrated dispersions is presented followed by a new interpretation of Levine's theory for concentrated colloidal dispersions in apolar media [J. Colloid Interface Sci., 54 (1976) 34]. We conclude that concentrated dispersions containing submicron particles are generally unstable leading to coagulation. Successive coagulations lead to the formation of larger secondary particles, “coagulates”, which are ultimately stable to further coagulation and exist in energetic minima.
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