Percolation phenomenon and the study of conductivity, viscosity, and ultrasonic velocity in microemulsions

Abstract

The dynamic properties, i.e., conductance, viscosity, and ultrasonic velocity, of water–aqueous NaCl + Tween 20 + propanol + benzene have been studied as a function of volume fraction of water at 30 °C. The conductivity results of these microemulsions are discussed in terms of a percolation model. An excellent qualitative agreement is observed between experimental and calculated values. The viscosity passes through a maximum, a local minimum, and again a second maximum. The ultrasonic velocity plots are not significantly influenced by salinity.