Thermodynamic interactions in binary mixtures of styrene with n-alkanes at298.15 K

Thermodynamic interactions in binary mixtures of styrene with n-alkanes hav e been studied in terms of excess quantities using the experimental results of density, viscosity, and speed of sound at 298.15 K. Flory as well as Pr igogine-Flory-Patterson equations were used to calculate the excess molar v olume in addition to enthalpy, entropy, and free-energy mixing functions. T he viscosity results were analysed using Bloomfield and Dewan theory to pre dict viscosity deviations, while the speed-of-sound results were analysed b y Benson and Kiyohara theory to predict the deviations in isentropic compre ssibility. The Prigogine-Saraga theory was used to calculate the deviations in internal pressure of liquids and liquid mixtures. Furthermore, isotherm al compressibility values were predicted from the Flory equation of state a nd compared with the experimentally obtained values. Overall, the computed and experimental results are discussed in terms of thermodynamic interactio ns between the mixing components.