Abstract
In a (W/O)/W emulsion, the dispersion behavior of (W/O) droplets was observed following sudden reduction in impeller speed. The rates of both coalescence and breakup of (W/O) droplets were quantitatively estimated, and then the dependence of coalescence and breakup rate constants on operating conditions such as impeller speed and droplet diameter was determined.As the impeller speed increased, coalescence and breakup also increase. As (W/O) droplet diameter increased, coalescence decreased and breakup increased.Leakage of the inner aqueous phase into the outer aqueous phase was found to occur mainly as a result of (W/O) droplet breakup.
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