Journal article

Bi-modal hetero-aggregation rate response to particle dosage

A Olsen, G Franks, S Biggs, GJ Jameson

JOURNAL OF CHEMICAL PHYSICS | AMER INST PHYSICS | Published : 2005

Abstract

The rate of flocculation of cationic polystyrene latex (PSL) particles by smaller, anionic PSL particles has been measured using a low-angle static light scattering technique. The rate of aggregate growth has been investigated as a function of particle size ratio and relative concentration of each particle species (for a constant dose of cationic particles). Contrary to many previous reports, two peaks in the flocculation rate were observed as a function of dose. It is speculated that the peak observed at the lower particle concentration coincides with the dose yielding maximum constant collision efficiency in the steady-state regime, a condition which is attained only after complete adsorpt..

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University of Melbourne Researchers