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Continuum percolation and depletion flocculation
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Soga, K. Geoffrey, Melrose, John R. and Ball, R. C.. (1998) Continuum percolation and depletion flocculation. The Journal of Chemical Physics, Vol.108 (No.14). pp. 6026-6032. 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 |
|---|---|
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of 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 |
| Date: | 1998 |
| Volume: | Vol.108 |
| Number: | No.14 |
| Page Range: | pp. 6026-6032 |
| Identification Number: | 10.1063/1.476015 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| URI: | http://wrap.warwick.ac.uk/id/eprint/39706 |
Data sourced from Thomson Reuters' Web of Knowledge
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