Interaction of Polyacrylamide with Cetyltrimethyl Ammonium Bromide in Aqueous Solution at Various Temperatures

Abstract

The interaction of cetyltrimethyl ammonium bromide (CTAB) with polyacrylamide (PAA) ahs been studied by means of surface tension, conductance measurements in aqueous solutions. The critical aggregation concentration (CAC) of cetyltrimethyl ammonium bromide solution from surface tension and conductance data has been found to be 0.91 mM at 303 K. The Critical aggregation concentration (CAC), and polymer saturation point (PSP) are found to decrease with increase in temperature. The thermodynamic parameters were determined at PSP; the DG^o_PSP values become more negative with increase in temperature.