Measurement of the Density and Viscosity of Diisopropyl Ether and 1-Alkanol Mixtures at Various Temperatures

Abstract

The current study was aimed to investigate intermolecular forces in six binary associating systems containing diisopropyl ether (DIPE) and normal alcohols (1-pentanol to 1-decanol) at 293.15–323.15 K. The density and viscosity of binary fluids were measured, and excess functions and partial volumes were calculated. Excess volumes and deviation in the viscosity are negative for all the above solutions. Intermolecular forces in mixtures are adjusted by molecular packing, dispersion forces, and hydrogen bonding. According to the findings, lengthening the alcohol chain increases intermolecular forces between molecules of different types. Most density and viscosity values are new and have not been reported in scientific papers yet.

Experimental and Theoretical Studies on Density and Viscosity of 1,3-Dioxolane and C6–C10 1-Alkanols

“…The pure parameters for the PC-SAFT model are typically determined from experimental data. In this study, data for alcohols and 1,3-dioxolane were obtained from previous research – , as they are indicated in Table . To improve the precision of the forecasts for the binary mixtures, the interaction parameter k ij was determined by the implementation of the subsequent equation. ε i j = ε i ε j ( 1 − k i j ) …”

“…Both 1,3-dioxolane and the alcohols had a mass fraction purity of greater than 99.5%, as shown in Table . Experimental measurements of density and viscosity for pure 1,3-dioxolane were performed in this study, – while data for the 1-alkanol were obtained from our previous work. – A comparison of the density and viscosity values for 1,3-dioxolane obtained in this study with those reported in the scientific literature is given in Table .…”

“…A fundamental aspect of this methodology is the establishment of a correlation between the Helmholtz energy resulting from molecular bonding and the density of the monomers, which is related to a function characterizing the intensity of such bonding. Recent research in our group has demonstrated the high reliability and consistency of the PC-SAFT theory when applied to complex pure fluids and their mixtures. – The present study focuses on the investigation of the experimental densities and viscosities of mixtures composed of 1,3-dioxolane and 1-alkanol compounds. Using the PC-SAFT approach in conjunction with the free volume theory, correlations are established between the data obtained.…”