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City University of New York (CUNY)
Droplet Deformation; Electrocoalescence; Surfactant; Surface Dilatational Viscosity; Asphaltenes; Langmuir Isotherm
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Droplets In An Electric Field: Surface Rheology, Coalescence And Rebound, Yu Han
Droplets In An Electric Field: Surface Rheology, Coalescence And Rebound, Yu Han
Dissertations and Theses
Electrocoalescence is the process in which pairs of conducting droplets suspended in a continuous dielectric (nonconducting) liquid phase are drawn together and merge upon the application of an electric field. The electric field polarizes each of the droplets in the field direction. The polarization causes the drops to deform and drives a dipolar attraction which forces them to approach each other and coalesce. Many technologies use electric fields to manipulate fluid dispersions. Electrocoalescence is an essential unit operation for separating water droplets in a crude oil. This water in oil emulsion is stabilized by surfactants, such as asphaltenes, resins and …