Solution Behaviour of Mixed Surfactant Systems In The Presence Of Electrolytes and Their Effect on Oscillatory Rheological Properties of Sodium Carboxymethyl Cellulose

Abstract

Data on critical micelle concentration (CMC) of mixed surfactant system containing solution of CTAB + IGEPAL CO 890 have been evaluated as a function of mole fraction of CTAB. The results have been studied in terms of Rubingh’s theory and the interaction parameter (ß) has been calculated. Experimental values of mixed surfactants 3:7 and 7:3 has been evaluated as 0.1 and 0.2 mM respectively, which is lower than the theoretical values. Thus, best suited for solution parameter analysis and further rheological properties is 3:7. Simultaneously the effect of mixed surfactant solutions on rheological properties of carboxymethyl cellulose also has been studied by using different sweep analysis; frequency, amplitude. The study of moduli; storage (G') and loss (G") modulus exemplifies the elastic behaviour of mixed surfactant over natural additive cmc. Further, the study has been extended to the effect of electrolytes addition with mixed surfactants for higher end application at food, cosmetics industries