Quasi-universally modeling of interfacial properties for saturated liquids using a dimensionless calorimetric parameter

In this work, the interfacial property of surface tension has been observed to be quasi-universally linked to a dimensionless calorimetric parameter (DCP) for saturated simple liquids. This parameter, derived from thermodynamic calorimetric properties and exclusively influenced by molecular interactions, holds promise for predicting interfacial property and displaying universal behavior. Similar to the excess entropy scaling, empirical evidence indicates linear relations between interfacial properties with the DCP, when appropriate scaling is applied. Based on this observation, formulas for calculating these properties through DCP has been be developed. For fluids with strong molecular interactions, we have also identified their deviations from universality and have proposed a new DCP based modification strategy. These new DCP-based models were evaluated and validated by comparing them with experimental data for 19 pure fluids from different molecular structure catalogues. The average absolute deviations (AADs) were within 2.04 %.