Intermolecular Free Lengths in the Liquid State. III. Viscosity.

Jacobson, Bertil; Laurent, Torvard C.; Krook, Sven; Westermark, Henrik; Steensgaard, Inger; Rosenberg, Th.

doi:10.3891/acta.chem.scand.07-0058

Cited by 5 publications

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“…The experimental values for the speeds of sound, υ , in the binary mixtures are listed in Table . The υ values were also calculated using free length and collision factor theories and the Junjie (as given in ref ) and Nomoto equations . Various characteristic properties (needed in the calculations) such as molar volume, V T , molar volume at absolute zero, V 0 , available volume, V a , free length, L f , surface area, Y , actual volume per mole, B i , molecular radius, r j , and molar heat capacities, C p , for the pure components at both the temperatures are listed in Table .…”

Section: Resultsmentioning

confidence: 99%

Densities, Excess Molar Volumes, Viscosities, Speeds of Sound, Excess Isentropic Compressibilities, and Relative Permittivities for Alkyl (Methyl, Ethyl, Butyl, and Isoamyl) Acetates + Glycols at Different Temperatures

2003

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New experimental data on densities at (298.15 to 313.15) K, viscosities, speeds of sound, and relative permittivities at (298.15 and 308.15) K for the 10 binary mixtures of alkyl (methyl, ethyl, butyl, and isoamyl) acetates + glycols (ethylene, diethylene, triethylene, and propylene) have been measured as a function of the composition. Deviation functions, such as deviations in speeds of sound and deviations in relative permittivities, and excess functions, such as excess molar volumes and excess isentropic compressibilities, were calculated and fitted to a Redlich-Kister type equation. Grunberg-Nissan, McAllister, and Auslander equations correlated the mixture viscosities adequately. The values of speeds of sound in these mixtures, as predicted by collision factor theory, matched well with experimental data. The variation of the Kirkwood correlation factor with the ester mole fraction was examined. A qualitative analysis of the deviation and excess functions was made to ascertain the nature and type of bulk state interactions.

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Section: Resultsmentioning

confidence: 99%

Densities, Excess Molar Volumes, Viscosities, Speeds of Sound, Excess Isentropic Compressibilities, and Relative Permittivities for Alkyl (Methyl, Ethyl, Butyl, and Isoamyl) Acetates + Glycols at Different Temperatures

2003

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“…The free length theory (FTL) of Jacobson − is used to calculate the intermolecular free length (see eq ). The variations of L f with respect to the IL mole fraction are shown in Figure a–d.…”

Section: Resultsmentioning

confidence: 99%

Intermolecular Interactions between 1-Ethyl-3-methylimidazolium-Based Ionic Liquids with Carboxylic Acid at Different Temperatures via Thermodynamic and Spectroscopic Studies

Masilo

Bahadur

2021

J. Chem. Eng. Data

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In this work, we studied the intermolecular interactions of binary mixtures of 1-ethyl-3-methylimidazolium-based ionic liquids (ILs) with acetic or propionic acid. The physicochemical behavior of the binary mixtures was investigated by measuring the thermophysical properties, including the density (ρ), sound velocity (u), and refractive index (n D ), over the complete range of the IL mole fraction at T = 293.15−333.15 K and p = 0.1 MPa. The surface tension (γ) of the binary mixtures was also measured at T = 298.15 K but not determined under other studied temperatures due to the lack of a temperature controller. The excess molar volumes (V m E ), excess isentropic compressibilities (k s E ), excess sound velocity (u E ), intermolecular free length (L f ), deviation in the refractive index (Δn D ), and deviation in the surface tension (Δγ) were determined from experimental results. These parameters were further fitted to the Redlich−Kister polynomial equation. FTIR studies of pure components and binary systems at an equimolar composition were conducted to clarify results from thermodynamic properties and also analyze the intermolecular interactions occurring in the mixture. A survey on available literature data was carried out to compare with our experimental data. The selected ILs allowed us to compare the influence of the anion on the thermophysical and thermodynamic properties the mixtures.

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“…The speeds of sound of MA + 1-alcohol mixtures are also predicted by using the free length and collision factors. − The basic properties of the pure components that are needed for the calculations are molar volume, V m , molar volume at absolute zero, V 0 , available volume, V a , actual volume, B i , surface area factor, Y , free length, L f , collision factor, S i , and molar heat capacity, C p, i . .…”

Section: Resultsmentioning

confidence: 99%

Densities, Viscosities, Speeds of Sound, and Relative Permittivities for Methyl Acrylate + 1-Alcohols (C₁−C₆) at T = (308.15 and 318.15) K

et al. 2002

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Measurements of densities, viscosities, speeds of sound, and relative permittivities for five binary mixtures of methyl acrylate + 1-alcohols (methanol, 1-propanol, 1-butanol, 1-pentanol, and 1-hexanol) at T ) (308.15 and 318.15) K are reported. The experimentally measured viscosities and speeds of sound in binary mixtures have been compared with those calculated using various semiempirical approaches. The isentropic compressibilities, molar electrical susceptibilities, and molar polarizations are calculated from the measured density, speed of sound, relative permittivity, and refractive index data. The excess volumes, excess isentropic compressibilities, excess molar electrical susceptibilities, and deviations in molar polarizations are calculated. These functions are fitted to a Redlich-Kister type equation. The variation of the Kirkwood correlation parameter has also been examined for all the binary mixtures over the whole composition range. Qualitative analysis of the various functions has been performed to elicit information on the nature of bulk molecular interactions in MA + 1-alcohol binary mixtures.

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Intermolecular Free Lengths in the Liquid State. III. Viscosity.

Cited by 5 publications

References 0 publications

Densities, Excess Molar Volumes, Viscosities, Speeds of Sound, Excess Isentropic Compressibilities, and Relative Permittivities for Alkyl (Methyl, Ethyl, Butyl, and Isoamyl) Acetates + Glycols at Different Temperatures

Densities, Excess Molar Volumes, Viscosities, Speeds of Sound, Excess Isentropic Compressibilities, and Relative Permittivities for Alkyl (Methyl, Ethyl, Butyl, and Isoamyl) Acetates + Glycols at Different Temperatures

Intermolecular Interactions between 1-Ethyl-3-methylimidazolium-Based Ionic Liquids with Carboxylic Acid at Different Temperatures via Thermodynamic and Spectroscopic Studies

Densities, Viscosities, Speeds of Sound, and Relative Permittivities for Methyl Acrylate + 1-Alcohols (C₁−C₆) at T = (308.15 and 318.15) K

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Intermolecular Free Lengths in the Liquid State. III. Viscosity.

Cited by 5 publications

References 0 publications

Densities, Excess Molar Volumes, Viscosities, Speeds of Sound, Excess Isentropic Compressibilities, and Relative Permittivities for Alkyl (Methyl, Ethyl, Butyl, and Isoamyl) Acetates + Glycols at Different Temperatures

Densities, Excess Molar Volumes, Viscosities, Speeds of Sound, Excess Isentropic Compressibilities, and Relative Permittivities for Alkyl (Methyl, Ethyl, Butyl, and Isoamyl) Acetates + Glycols at Different Temperatures

Intermolecular Interactions between 1-Ethyl-3-methylimidazolium-Based Ionic Liquids with Carboxylic Acid at Different Temperatures via Thermodynamic and Spectroscopic Studies

Densities, Viscosities, Speeds of Sound, and Relative Permittivities for Methyl Acrylate + 1-Alcohols (C1−C6) at T = (308.15 and 318.15) K

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Densities, Viscosities, Speeds of Sound, and Relative Permittivities for Methyl Acrylate + 1-Alcohols (C₁−C₆) at T = (308.15 and 318.15) K