Study of the Phase Diagrams of Pseudo-ternary Water-in-Diesel Oil Microemulsion

Phase diagrams of pseudo-ternary microemulsions consisting of mixed surfactants (D0821/Tx-4/AEO-3)/n-pentanol/diesel oil/water system were plotted at different temperatures and different mass fractions of n-pentanol,and the properties of microemulsion system were discussed.The results show that area of microemulsion regions and maximum water content of microemulsion are related to mass fraction of n-pentanol and temperature.We got the largest area of microemulsion regions when the mass fraction of n-pentanol is proper.In addition,area of microemulsion region and maximum water content of microemulsion decreases with increase in temperature.The microemulsion region and maximum water content of microemulsion move to the corner (AEO-3/n-pentanol/diesel oil) in the phase diagram with increasing mass fraction of n-pentanol.