Temperature-dependent coefficient of surface tension prediction model without arbitrary parameters

Abstract

In this study, we report a temperature-dependent prediction model without arbitrary parameters for the coefficient of surface tension of homogeneous liquid, and then validate it by the available experimental data of fifteen kinds of pure liquids. Very small maximum deviation or absolute average deviation between predicted and experimental results has been obtained. The prediction model uncovers the inherent relationship between the coefficient of surface tension, boiling point, heat of evaporation, heat capacity, and coefficient of linear expansion. Furthermore, it reveals that the decrease of cohesion energy determines the decline of coefficient of surface tension and can analyze the variation of coefficient of surface tension with increasing temperature.