Density, dynamic viscosity, excess property and intermolecular interplay studies for 1,4-butanediol + dimethyl sulfoxide binary mixture.

The density ( ρ ) and kinematic viscosity ( v ) in the scope of T  = (298.15 to 323.15) K were systemically studied for 1,4-butanediol (BDO) (1) + dimethyl sulfoxide (DMSO) binary mixture with various compositions at atmospheric pressure. From the ρ and v values, the dynamic viscosity ( η ) were also obtained. According to the above experimental values, viscosity deviation (∆ η ), excess molar volume ( V m E ), partial molar volumes ( V 1 ¯ and V 2 ¯ ), apparent molar volume ( V φ ,1 and V φ ,2 ) and isostatic pressing thermal expansion ( α p ) were determined. The ρ , V m E and ∆ η values were fitted by using Jouyban-Acree model, Eyring equation, and Redlich-Kister equation, respectively. Additionally, the intermolecular interplay was analyzed using FTIR, NMR, and UV–vis spectra, which suggested the formation of hydrogen bonds between the hydroxyl H atoms in BDO and the O atoms in DMSO. [ABSTRACT FROM AUTHOR]