EXCESS VOLUMES AND EXCESS VISCOSITIES OF BINARY-MIXTURES OF CYCLOHEXANE PLUS AN ISOMER OF BUTANOL AT SEVERAL TEMPERATURES

From density and viscosity measurements of binary mixtures of cyclohex ane with an isomer of butanol at several temperatures, excess volumes V-E, excess viscosities eta(E) and excess energies of activation for V iscous flow G(E) have been determined at different temperatures. The results have been correlated by a Redlich-Kister type equation and dis cussed in terms of molecular interactions. While V-E values are positi ve over the whole composition range for all mixtures at all temperatur es, both eta(E) and G(E) are negative.