Electrical Conductivity of Water/Sodium Bis(2-ethylhexyl) Sulfosuccinate/n-Heptane and Water/Sodium Bis(2-ethylhexyl) Phosphate/n-Heptane Systems: The Influences of Water Content, Bis(2-ethylhexyl) Phosphoric Acid, and Temperature

Physicochemical studies on microemulsions

“…The other oils have produced the phenomenon at higher Φ after showing minima in conductance at Φ values shown in the figure with arrowheads. The presence of such humps at low Φ has been also reported by Alexandridis et al [5], Liu et al [20,21], and Li et al [22] for AOT-derived microemulsions forming systems with heptane and i-octane. An explanation for the hump at low Φ is still lacking; but the above workers have observed the hump to decline with increasing temperature.…”

“…Other ionic surfactants need nonionic surfactants and cosurfactants in combination to augment the process [18a,18b]. A literature survey reveals that temperature-induced percolation [4][5][6][7][8][9][10][11][12][13][14][15][16][17] has been studied more frequently than volumeinduced percolation [5,[17][18][19][20][21][22][23][24] using all kinds of aliphatic hydrocarbon oils. The studies with nonaliphatic hydrocarbon oils [25,26] are much lower in number.…”

Interface of AOT/Brij mixed reverse micellar systems: Conductometric and spectrophotometric investigations

“…This passage is facilitated by the formation of the certain local region of positive curvature in AOT surfactant film [25]. The fluidity of the interface and the attractive interactions among the aggregates are the most important factors that determine the exchange rate of the ions and water molecules during the fusion processes [26,27]. Any factor that increases the fluidity of the interface and/or the interdroplet interaction would also increase the ease of conductance percolation.…”

Percolation phenomenon in mixed reverse micelles: The effect of additives

“…Investigations on the microstructures and properties of reverse micelles formed with mixed surfactants (i.e., addition of a second surfactant to water/single surfactant/oil system) has seldom been carried out to understand the basic mechanism of the phenomenon taking place inside them. However, reports available on the latter aspect are due to Alexandradis et al [28], Nazario et al [44], Eicke et al [45,46], Li et al [47,48], Liu et al [49,50], Bumajdad et al [51].…”