Narayanan, T. ; Anil Kumar, ; Gopal, E. S. R. ; Beysens, D. ; Guenoun, P. ; Zalczer, G. (1993) Reversible flocculation of silica colloids in liquid mixtures Physical Review E, 48 (3). pp. 1989-1994. ISSN 1063-651X
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Official URL: http://pre.aps.org/abstract/PRE/v48/i3/p1989_1
Related URL: http://dx.doi.org/10.1103/PhysRevE.48.1989
Abstract
We report some observations concerning the reversible flocculation of silica colloids in reentrant liquid mixtures of 3-methylpyridine plus water plus heavy water and 2,6-lutidine plus water. Our research involved a detailed determination of the line of flocculation temperatures for phase-separating as well as non-phase-separating mixtures. We find that the flocculation temperature is more influenced by the impurities in the suspension rather than the concentration and size of the spheres. For a fixed volume fraction and diameter of the colloids, we notice a close similarity between the dome of flocculation temperatures and the bulk-coexistence surface but with different amplitudes and exponents in each case.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 27935 |
| Deposited On: | 13 Dec 2010 08:31 |
| Last Modified: | 14 Jun 2011 09:25 |
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