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Citation: Li Tong-Ming, Zhao Li-Yan. Effect of Interfacial Rheological Properties on Coalescence between Small Drops[J]. Acta Physico-Chimica Sinica, ;1996, 12(08): 709-715. doi: 10.3866/PKU.WHXB19960808 shu

Effect of Interfacial Rheological Properties on Coalescence between Small Drops

1.
Department of Chemical Engineering,Tianjin University,Tianjin 300072

Received Date: 5 February 1996
Available Online: 15 August 1996

The coalescence process between two small liquid drops in surfactant solutions has been studied. A model is developed for the dynamics of the thinning dimpled film in which the influence of London-van der Waals forces is considered. The effects of surface diffusion, interfacial viscosities, and interfacial tension gradient on coalescence are investigated. The coalescence time, which is the time required for the thinning and rupture of the liquid film, is expressed as a function of the drop sizes, the physical properties of two liquid phases, and inter facial properties. The predictions are in od agreement with the previous experimental data.
- Liquid drop,
- Coalescence time,
- Liquid film flow
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