Journal
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
Volume 374, Issue 2, Pages 507-516Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physa.2006.08.051
Keywords
dilute colloidal suspension; aggregation; Brownian dynamics; simulation; interaction potential; fractal properties
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This work is a theoretical contribution to the understanding of the aggregation process in dilute colloidal suspensions. We employ Brownian dynamics simulations, with homodisperse solid spherical particles, neglecting hydrodynamic interactions between the particles. We study the influence of the shape of the interaction potential on the aggregation process and in particular the effect of an increase of the attraction range with regard to the DLVO potential. It is concluded that it can change either the aggregates shape and the aggregation kinetics. We show that the fractal properties, the cluster size distribution and the average cluster size prove to be capable of characterizing those effects, at least in the simulations, with two well-separated attraction ranges. (c) 2006 Elsevier B.V. All rights reserved.
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