Volumetric properties of binary mixtures of 2-dimethylaminoethanol and 2-diethylaminoethanol with dimethylsulfoxide

This work reports the volumetric properties of binary mixtures of 2-dimethylaminoethanol (DMAE) and 2-diethylaminoethanol (DEAE) with dimethylsulfoxide (DMSO) as a function of composition in the temperature range 298.15-318.15 K at atmospheric pressure. The excess molar volumes, apparent molar volumes, and excess partial molar volumes of both the components were determined in order to reflect several aggregation patterns present in the binary solvent system. The excess molar volumes show positive deviations from ideality. The excess partial molar volumes show complex dependence on composition and temperature. The results were used to investigate intermolecular interaction and structural configuration in these mixtures.

Automated summary

This study investigated the volumetric properties of binary mixtures of DMAE, DEAE, and DMSO to explore aggregation patterns and intermolecular interactions. The results showed positive excess molar volumes and complex dependence of excess partial molar volumes on composition and temperature.