Comparative Study on Different Models to Calculate Interfacial Surface Tension

Several studies have been carried out in order to develop a fresh model for the calculation of the various interfacial properties, in view of the prominence of certain significant interfacial properties in various processes, which inter alia include interfacial surface tension and the density distribution on interface. The paper mentions the comparison among the distinct models for the computation of the interfacial surface tension and density distribution on the interface. Further it was found that among these models, Density Gradient Theory (DGT) Model shows good agreements for various single, binary and tertiary component mixtures. In the DGT model, Peng Robinson equation of states (PR-EoS) is used to calculate the interfacial densities for various systems. This interfacial density distribution itself serves as a base for calculation of various properties. These density distribution result can additionally be used as the framework conditions for the subsequent derivations to be done in accordance with the DGT equation for the Interfacial Surface tension calculations thereafter.