Cloud point and thermodynamic properties of a non-ionic surfactant Triton- X-100 in presence of various organic and inorganic Salts

A. D. Kakuste1, M. S. Borse2 a

Abstract

Cloud points (CPs) of non-ionic surfactants Triton-X-100 was studied in the presence of monovalent, divalent and trivalent cations (Basic radicals) from inorganic salts such asNa+Cl,Ca+2Cl2, Al+3Cl3 and anions (Acidic radicals) from organic salts such as Sodium-Lactate-, Sodium-Malate-2, Sodium Citrate-3 respectively. Initially the CP of Triton-X-100 was found to be increase up to 0.01M but at higher concentration, the CP was found to decrease continuously. The extent of decrease in CP value was more significant at trivalent radical than divalent and monovalent radicals. The thermodynamic parameters of these systems was also evaluated and discussed. The decrease in CP with increase in concentration of radicals is entropy driven process.