Measurement of viscosity
A rotational programmable viscometer (DV III Ultra, Brookfield
Engineering Laboratories, USA) at 25 C using the SC4-18 and SC4-
31 spindles was used for viscosity measurement. The temperature
of emulsions was brought to equilibrium and maintained constant
throughout experiments by means of a thermostat tank. The
measurements recorded at shear rate of 50 s1 were considered as
emulsion viscosity.