Abstract

AbstractExperiments on the flocculation of suspensions in a mineral oil show that high viscosity gives rise not only to low flocculation velocity but also to very slight adhesion of the particles. In a mineral oil as a viscous non‐aqueous liquid the influence of viscosity and temperature on the kinetics of colloidal phenomena can be investigated over a much wider range than in water.The effect of peptizers is investigated and a case is described in which two peptizers counteract each other. This is remarkable in view of the fact that the current explanation involving ions of opposite charge cannot be given.

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