We conducted experiments to determine the physical processes involved at the inversion point of water-kerosene dispersions. In the course of these experiments, we noted a viscosity maximum at the inversion point. This led to the development of an indirect method for determining the viscosity of concentrated liquid dispersions. Our data were found to be best fit by the dispersion viscosity equation (eq 6). Dispersion viscosity expressed as a function of dispersed-phase volume fraction gives some insight into the structure of the dispersed phase near the inversion point.Liquid-liquid dispersions are used to promote heat and mass transfer in mixer-settler units. The phase inversion behavior of these dispersions is important since the drop size of the dispersed phase and the settling time of the dispersion depend on which of the phases is continuous.
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