Abstract
Abstract Physicochemical behavior of cetyltributylphosphonium bromide (CTBuPB) surfactant in presence of additives (urea, thiourea and sucrose) has been studied by conductometric measurement at 303–320 K. The critical micelle concentration (CMC) and degree of micellar ionization (α), increases with increasing concentration of additives (urea, thiourea and sucrose). The standard Gibbs free energy of micellization (ΔGo m), enthalpy of micellization (ΔHo m) and entropy of micellization, (ΔSo m), have been obtained by applying the mass action model. The free energy and enthalpy of micellization have found to be negative in all the systems.
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