Surface Tension of Dialkyl Carbonates + (Alkanes or 1,4-Dimethylbenzene) and 1,4-Dimethylbenzene + Alkanes Binary Mixtures at T = 308.15 K

Abstract

New experimental surface tension data are reported for binary mixtures of dimethyl carbonate and diethyl carbonate with octane, decane, and 1,4-dimethylbenzene and 1,4-dimethylbenzene with octane and decane at 308.15 K and atmospheric pressure. These experimental results are compared with those reported in the literature at different temperature when they are available. The experimental results show that surface tension of these compounds depends systematically on temperature. The surface tension deviation calculated was fitted by the Redlich–Kister polynomial equation. The adjustable parameters obtained for each system are reported with the standard deviations between experimental and calculated values.

Study of Density, Surface Tension, and Refractive Index of Binary Mixtures Containing Alkyl Levulinate and n-Alcohol from 298.15 to 323.15 K

“…The surface tension deviation increases and becomes less negative as the temperature increases. A similar trend was reported in various binary mixtures such as the mixture of nhexadecane with solketal, 14 dodecylbenzenesulfonic acid with acetone, ethanol with 1-butyl-3-methyl-imidazolium L-lactate, 22 1-butyl-1-methylpyrrolidinium tricyanomethanide with benzothiophene, 59 diethyl carbonate with decane, 50 and methanol, ethanol, and propanol with DMSO. 19 Changes of surface tension deviation with temperature may be attributed to diminishing the bonding in the compounds (i.e., hydrogen bonding) and a new distribution of interactions at the surface and in the bulk region of the binary mixture.…”

“…In this study, for Vm E and other cases, the best fit for eq 3 was obtained using a total of four fitting parameters: A 0 , A 1 , A 2 , and A 3 . In other studies, the fitting has featured a different number of parameters, including two, 31 three, 31,46−49 four, 14,15,31,32,36,39,50 five, 5,10,13,45 and six 37 parameters, where the optimal number of fitting parameters were determined using several approaches, such as inspection of the variation of the standard deviation, 6,10,44,46−48 F-test, 31,36 and Akaike Information Criteria. 37 Equations 3 and 4 were also used to determine the standard deviation of other deviation properties, surface tension deviation (Δγ) and molar refraction deviation (ΔR), where Y is the value of the respective deviation property, as will be discussed in the subsequent sections.…”

“…For instance, a study on the binary mixtures of dialkyl carbonate and 1,-4 dimethylbenzene with alkanes found that increases of alkyl chain length of alkane increases the surface tension deviation due to the increasing strength of dispersion forces. 50 More study is needed to address the relationship between the chain lengths of the compounds with the deviation of surface tension of the binary mixture. The surface tension deviation increases and becomes less negative as the temperature increases.…”

“…In this study, for V m E and other cases, the best fit for eq was obtained using a total of four fitting parameters: A 0 , A 1 , A 2 , and A 3 . In other studies, the fitting has featured a different number of parameters, including two, three, ,− four, ,,,,,, five, ,,, and six parameters, where the optimal number of fitting parameters were determined using several approaches, such as inspection of the variation of the standard deviation, ,,,− F -test, , and Akaike Information Criteria …”

“…In contrast, there are studies that reported an increase in the Δγ values with the alkyl chain length of the component. For instance, a study on the binary mixtures of dialkyl carbonate and 1,-4 dimethylbenzene with alkanes found that increases of alkyl chain length of alkane increases the surface tension deviation due to the increasing strength of dispersion forces . More study is needed to address the relationship between the chain lengths of the compounds with the deviation of surface tension of the binary mixture.…”