Physicochemical Studies on Microemulsions

Dispersed Molecular Aggregates

“…In this study, d h values at three ω values are reported. The system water/(TX-100 + n-alkanol)/n-heptane is not stable for a wide range of ω in the presence of additives as in the H 2 O/AOT/heptane microemulsion system (30)(31)(32). For the present system, ω could only be varied within a narrow range of 20-30.…”

The effect of additives on the water solubilization capacity and conductivity in n-pentanol microemulsions

“…This area has been intensively studied and quantification with adequate theories has been attempted for normal alkane systems [14,15]. In recent years, the effect of additives on conductance percolation in these systems has been investigated as well [16][17][18][19]. It has been shown that certain additives can promote or retard the occurrence of percolation phenomenon, while others may remain totally ineffective.…”

“…Compounds such as hydroxy bile salts (sodium cholate and deoxycholate) have been found to assist percolation by reducing either the threshold volume fraction of water or the threshold temperature, whereas aromatic compounds, viz., toluene, xylene, sodium salicylate, benzene, and naphthalene, have been observed to retard or hinder percolation by increasing the threshold volume fraction or temperature. Some mechanisms for these effects have been put forward [12,17,18]. It has been suggested that the hydroxy bile salts can form "channels" in the droplet fusion process, thus helping with easier transfer of ions, whereas the aromatic compounds "block" the fusion of droplets [17,18,20], thus delaying the ion transfer.…”

“…Some mechanisms for these effects have been put forward [12,17,18]. It has been suggested that the hydroxy bile salts can form "channels" in the droplet fusion process, thus helping with easier transfer of ions, whereas the aromatic compounds "block" the fusion of droplets [17,18,20], thus delaying the ion transfer.…”

Investigation on conductivity of mixed surfactants reverse microemulsion

“…However, due to the defect of its electrical conductivity, conventional reverse microemulsion cannot be used as electrolyte in electrochemistry research. Additive such as electrolyte or organic molecule can improve the conductivity while decreasing the stability and water solubilization of microemulsion greatly [9][10][11]. Therefore, electrochemistry investigation based on the conductive behavior of microemulsion can extend its application field.…”