Interaction studies in binary liquid mixtures of ether and alcohols at different temperatures

Densities (rho), speeds of sound (u) and viscosities (eta) of binary liquid mixtures of triethylene glycol monomethyl ether and alcohols (1-hexanol, 1-octanol, and 1-decanol) and those of pure liquids at 293.15, 298.15, 303.15 and 308.15 K and atmospheric pressure are reported over the entire composition range. Using the experimental results, excess molar volumes (v(m)(E)), isentropic compressibilities (kappa(s)), deviation of isentropic compressibilities (Delta kappa(s)), deviation of the speeds of sound (Delta u) and viscosity deviations (Delta eta) have been calculated to understand the intermolecular interactions between the component molecules. These excess properties have been correlated with composition using the Redlich-Kister polynomial equation. The positive values of v(m)(E) and Delta kappa(s) show that volume expansion takes place on addition of alcohols to the ether. The negative values of Delta u and Delta eta also indicate the presence of weak intermolecular forces which follow the order: 1-hexanol > 1-octanol > 1-decanol.