Excess Parameters of Binary Mixtures of 1, 2-Dimethoxyethane-Propylene Carbonate and 2-Methoxyethyl Ether-Propylene Carbonate

Obowu, J.N.; Ibezim-Ezeani, Millicent Uzoamaka; Abia, A. A.

doi:10.9734/psij/2018/42560

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“…As the percentage volume of ACN increases and that of DMSO decreases, the density of the ACN-DMSO binary mixture decreases. This decrease in density is due to the intermolecular order disruption effect and their interaction within the binary mixture (Obowu et al 2018) (Armenskaya & Lanshina 1973;Khimenko & Gritsenko 1980;Davydova 1986;Orjiocha et al 2022, andMoumouzias 1991). In the ACN-DMSO mixture studied, it was observed that there are fluctuations of little rise and fall in the density at different mole fraction at each temperature which is believed to be the result of DMSO addition (Fig 1).…”

Section: Densitymentioning

confidence: 99%

Excess parameters of binary mixtures of acetonitrile- dimethyl sulphoxide

Orjiocha,

Orjioke,

Ibezim-Ezeani

2023

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The excess parameters associated with liquid mixes of acetonitrile-dimethyl sulphoxide were analyzed to estimate the degree of intermolecular interactions in the binary system. The viscosities and densities of the binary system were determined at temperatures of 298.15, 303.15, 318.15, 328.15, and 338.15K, respectively, with a percentage composition of 0 to 100 percent. Using the experimental density and viscosity measurements, the excess molar volumes (VmE), excess viscosity (nE), excess Gibbs' free energy of activation of viscous flow (G*E), and Grunberg-Nissan interaction parameters were calculated. Deviations from these parameters studied in the composition of the mixtures and temperature were discussed in terms of molecular interactions in these mixtures. A comparison of several interaction characteristics was expressed to better understand the intermolecular interactions between acetonitrile and dimethyl sulphoxide. As the temperature of the system and the mole fractions of acetonitrile rise, the viscosity and density of the experimental values drop. According to the findings, the excess parameters were mostly negative, indicating that dipoledipole interactions predominated in the acetonitrile-dimethyl sulphoxide solvent mixture.

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Section: Densitymentioning

confidence: 99%