Synthesis, characterization and study of copolymer/surfactant mixture in aqueous solution by conductivity and viscosity techniques

Abstract

The copolymer CPAV was synthesized by radical copolymerization. The acid chloride was added to this copolymer to produce the CPAVCl. The conductivity and viscosity measurements were used to study the interaction of CPAVCl with an anionic surfactant-sodium dodecyl sulfate (SDS) in aqueous solutions of different concentrations at 25°C. The result shows that the values of conductivity and viscosity system were influenced by the surfactant concentration, polymer concentration and salinity. It is observed that the surfactants induced cooperative binding with the polyelectrolyte at critical aggregation concentration (CAC). The CAC values are considerably lower than the corresponding critical micelle concentration (CMC) of the surfactant. Thus, the saturation of the polyelectrolyte by the surfactant molecules occurs at the concentration of saturation (X2) which is greater than the (CMC).