Emulsion stability: an analysis of the effects of bulk and interfacial properties on film mobility and drainage rate |
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| Authors: | Z Zapryanov AK Malhotra N Aderangi DT Wasan |
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| Institution: | Department of Chemical Engineering, Illinois Institute of Technology, Chicago, IL 60616, U.S.A. |
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| Abstract: | A hydrodynamic model is developed to predict the kinetics of thinning of emulsion films, such as those existing between two approaching liquid droplets or a drop coalescing at a bulk interface. The present analysis includes the effects of surfactants present in both the film and the drop phases, interfacial tension, interfacial viscosities and their gradients at the liquid-liquid interface on the rate of film drainage. The analysis accounts for the flow in the drop as well as in the film phases. The theoretical predictions are in good agreement with the limited experimental results of Traykov et al. (1977). |
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| Keywords: | The author to whom all correspondence should be sent |
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