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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 ISSN 0021-9606.
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Official URL: http://dx.doi.org/10.1063/1.476015
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 | ||||
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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: |
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Volume: | Vol.108 | ||||
Number: | No.14 | ||||
Page Range: | pp. 6026-6032 | ||||
DOI: | 10.1063/1.476015 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published |
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