Phase transitions at interfaces: Flocculation of charge stabilised colloids in liquid mixtures

A. Kumar and D. Beysens

Physica A: Statistical Mechanics and its Applications, 1996, vol. 224, issue 1, 68-73

Abstract: An intriguing phenomenon of reversible flocculation of charge-stabilised colloids in liquid mixtures is described. Some recent results concerning the shape of the flocculation surface, especially near special critical points (e.g. a double critical point, DCP), are also discussed. The findings regarding the kinetics of aggregation/fragmentation have been reviewed. The theoretical efforts behind the mechanism of this phenomenon (e.g. prewetting, capillary condensation, adsoprtion-driven secondary minimum in the interparticle DLVO potential, Casimir forces, etc.) are outlined. The role of special critical points (e.g. a DCP or a quadruple critical point, QCP) in elucidating several key features of the above phenomenon is underlined. Several challenging problems in this emerging area that demand attention, are pointed out.

Date: 1996
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:224:y:1996:i:1:p:68-73

DOI: 10.1016/0378-4371(95)00315-0

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