Modeling and Correlation of Physical Properties of Ternary Liquid Mixtures

Abstract

Densities, viscosities, and refractive indices of a ternary system and three component binary systems at T=298.15 K were determined at atmospheric pressure and across the concentration range. The measured values of density were used to determine the observed values of excess volumes. These results were used to calculate refractive index deviations (Δn), viscosity variances (Δη), and excess molar volumes (VE). Redlich - Kister polynomials of variable degrees were fitted to the estimated values of VE, η, and n. The ternary results were compared with the values estimated by a number of theoretical equations of prediction, including the McAllister three- and four-body interaction models, Flory model, Glinski model, and (RS) model. In conclusion, by using VE, Δη, and Δn, these models can aid in our understanding of the characteristics and interactions pertaining to liquids. When we compared the results of the experiment and theory, we discovered some degree of consistency.