Study of several approaches for predicting electrical conductivity of sodium-dodecyl-sulfate solution in the presence of Na2CO3 and KPS

摘要

In this paper, semi-empirical relationships for calculating the electrical conductivities of sodium dodecyl sulfate (SDS) solutions in the presence of different concentrations of sodium carbonate and potassium persulfate (KPS), which are used in emulsion polymerization, are given. The results of these methods for predicting the electrical conductivities are given and compared with each other and with experimental data. Finally, a new method for conductivity prediction is presented. The new method, based on this study, predicts the conductivity of electrolyte solutions more accurately, especially in a moderate or relatively high concentration of electrolytes. Hence, to show the superiority of this method compared to previous methods, the conductivities of different concentrations of combinations of these electrolytes were evaluated and compared with the previous methods. Similarly, the effects of the concentration of electrolytes on electrical conductance of SDS solutions above and below the critical micelle concentration (CMC) are studied. (C) 2014 Elsevier BM. All rights reserved.