Influence of water soluble polyacrylamide on cyclohexane / CTAB / 1-propanol/water system

Abstract

<span style="font-size:12.0pt;font-family: " times="" new="" roman";mso-fareast-font-family:"times="" roman";mso-ansi-language:="" en-in;mso-fareast-language:en-in;mso-bidi-language:ar-sa"="" lang="EN-IN">The pseudoternary phase diagram of the system cyclohexane/CTAB<i>/</i>1-propanol<i>/</i>water has been constructed at different temperatures from 30^° to 60^°C. The mass ratio between CTAB and 1-propanol has been kept at 1:2. The phase diagrams have also been constructed in presence of polyacrylamide (PAA). Both the temperature and concentration of PAA have been varied; it is found that in presence of 0.005% PAA, the monophasic region is somewhat favoured. However, at higher concentrations of PAA, the monophasic region decreases drastically. The physicochemical properties have also been studied at different concentrations of PAA. The percolation is not observed in presence or in absence of 0.005% PAA. Optimal salinity values seem to be independent of temperature and are found to be controlled by individual ions of the electrolyte rather than the electrolyte. The adiabatic compressibility of the microemulsions (μE) is found to decrease with increase in the volume fraction of water.</span>