Emulsion Catastrophic Inversion from Abnormal to Normal Morphology. 4. Following the Emulsion Viscosity during Three Inversion Protocols and Extending the Critical Dispersed-Phase Concept

Three protocols are tested to invert an abnormal emulsion into a normal one: a dynamic process with continuous addition of an internal phase, continuous stirring of a given emulsion with no addition of an internal phase, and the combination of the previous ones, i,e. a standstill dynamic process in which the addition of an internal phase is interrupted at some time and then followed by continued stirring, In situ follow-up of both conductivity and viscosity data in a rheomixer vessel provides complementary information to corroborate the critical dispersed-phase concept as a condition for the inversion to take place in all cases. Some applications are discussed,