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Continuum percolation and depletion flocculation

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Soga, K. Geoffrey, Melrose, John R. and Ball, Robin (1998) Continuum percolation and depletion flocculation. The Journal of Chemical Physics, Vol.108 (No.14). pp. 6026-6032. doi:10.1063/1.476015

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Official URL: http://dx.doi.org/10.1063/1.476015

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Abstract

Using Brownian dynamics simulations, we investigate continuum percolation in a system of colloid particles aggregating due to depletion flocculation. For all values of aggregating potential, there is a lower threshold volume fraction of colloid particles at which a percolating cluster appears. This threshold defines a percolation “phase” boundary that crosses the phase boundary between the colloid fluid phase and colloid fluid+crystal coexistence. In the two-phase coexistence regime, the lifetime of percolated clusters increases dramatically, and therefore the percolation threshold may be related to a transient gel threshold reported from experiment. In the phase coexistence regime, there is evidence of aging due to the thermal restructuring of clusters, implying a finite lifetime for percolating structures.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Percolation (Statistical physics), Brownian movements, Flocculation, Colloids
Journal or Publication Title: The Journal of Chemical Physics
Publisher: American Institute of Physics
ISSN: 0021-9606
Official Date: 1998
Dates:
DateEvent
1998Published
Volume: Vol.108
Number: No.14
Page Range: pp. 6026-6032
DOI: 10.1063/1.476015
Status: Peer Reviewed
Publication Status: Published

Data sourced from Thomson Reuters' Web of Knowledge

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