Suppression of coalescence in surfactant stabilized emulsions by shear flow
DSpace at IIT Bombay
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Title |
Suppression of coalescence in surfactant stabilized emulsions by shear flow
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Creator |
NANDI, A
MEHRA, A KHAKHAR, DV |
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Subject |
colloidal dispersions
fields drops |
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Description |
A study of the shear flow-induced coalescence in a surfactant stabilized, neutrally buoyant emulsion is presented. Evolving drop size distributions are obtained by image analysis. The shear induced coalescence is well described by a population balance model with the coalescence rate taken to be proportional to the Smoluchowski coalescence rate. The coalescence efficiency (ratio of the actual rate to the Smoluchowski rate) is extracted from the experimental data and is found to be independent of drop size. Both theory and experiment show a reduction in the coalescence rate with increasing shear rate. The effect suggests a simple means of stabilizing suspensions during storage.
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Publisher |
AMERICAN PHYSICAL SOC
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Date |
2011-07-17T21:46:06Z
2011-12-26T12:50:30Z 2011-12-27T05:35:35Z 2011-07-17T21:46:06Z 2011-12-26T12:50:30Z 2011-12-27T05:35:35Z 1999 |
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Type |
Article
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Identifier |
PHYSICAL REVIEW LETTERS, 83(12), 2461-2464
0031-9007 http://dx.doi.org/10.1103/PhysRevLett.83.2461 http://dspace.library.iitb.ac.in/xmlui/handle/10054/4844 http://hdl.handle.net/10054/4844 |
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Language |
en
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