On the basis of the rheological investigation, the following
conclusions concerning the stability of W/O HIPEs
could be drawn: Firstly, it is speculated that the increasing
pattern of complex modulus versus water phase volume
fraction represents an ability of interfacial layers of W/O
HIPEs to resist to the coalescence of water droplets. From
the pattern of complex modulus change with water phase
volume fraction, the rheological consistency of emulsions
can be predicted. Secondly, the choice of oils is important
because this coincides with the requirements for the formation
of the rigid liquid crystalline phase in emulsions,
but the change in oil polarity of emulsions does not make
distinct difference when our remarks are confined to the
experimental results conducted in this study. Lastly, it is
believed that proper addition of electrolyte into the water
phase opposes the instability due to coalescence, and as a
result, the rheological consistency of HIPEs increases.