Inter-molecular interactions between water and ethanol

Abstract

The structure and properties of alcohol-water mixtures are of great significance in the study of mass transfer theory and industrial applications. When dissolving in water, alcohols form hydrogen bonds with water, further complicating the properties of the binary mixture. The properties of the mixture they form are quite different from those of the corresponding pure substance. However, although ethanol-aqueous solutions have been widely used, the physical and chemical properties of ethanol-aqueous solutions have not been thoroughly explained. In this paper, various physical changes of ethanol and water after dissolution were observed by experiments, and the possible causes of these changes were analyzed from the perspective of molecular dynamics. It is of positive significance to further understand the molecular interaction between ethanol and water in mixtures and the properties of ethanol aqueous solution.