The apparent and partial molar volumes of both ethanol and water practically do not depend on the composition and concentration of the TX-100 and CTAB mixture and are comparable to those for the aqueous solution of “pure” ethanol.
The partial and apparent molar volumes of the TX-100 and CTAB mixture and the conductivity data suggest that the size of micelles and the degree of CTAB dissociation depend on the ethanol concentration and the composition of the surfactant mixture.