Conductometric study of the new reactive dye with cetylpridinium chloride surfactant

Although, the interaction between dyes and surfactants has been studied in many papers, the studies in this area are still important and interesting for improving the dyeing process from theoretical, technological, ecological and economical points of view. The investigations into the behavior of different dyes in surfactant aqueous solutions can give useful information for understanding the thermodynamics and kinetics of the dyeing process and the finishing of textile material [۱].Reactive dyes are extensively used in dyeing processes in textile industry [۲]. Dye molecules with phenyl groups can adopt a planar structure and readily tend to form intermolecular interaction that facilitates permanent aggregation under some experimental conditions.In the present paper, we studied conductivity of mixtures of dye and surfactant over the range of concentrations at which these compounds are miscible. Mono-s-chloro triazinyl (MCT) was used as anionic reactive dye and Cetylpridinium chloride (CPC) was used as cationic surfactant. The method is used for calculation of equilibrium constant from which theoretical model was derived. The influence of temperature on ion pair formation is observed with this method.