Free-volume theory coupled with modified group-contribution PC-SAFT for predicting the viscosities. II. Alcohols and their mixtures

NguyenHuynh, Dong; Luu, My T.; Nguyen, Xuan Toan; T.Q., Chau; Tran, Siem T.K.

doi:10.1016/j.fluid.2019.112298

Cited by 9 publications

(4 citation statements)

References 62 publications

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“…The models predicted the viscosity of the mixtures with an overall deviation of 5.07% and 3.07%, using Kendall-Munroe correlation and Nguyenhuynh correlation, respectively. The values obtained are in agreement with the values obtained by authors who have applied these equations to mixtures composed of alcohol …”

Section: Resultssupporting

confidence: 90%

“…In this work, we are interested in the use of correlations that do not have adjustable parameters. The simplest mixing rule, which has been widely used in the literature, − is the Kendall-Munroe (KM) relation and is defined by eq : η = exp [ ∑ i = 1 n c x i nobreak0em0.25em⁡ ln ( η i ) ] Nguyenhuynh et al proposed a modified version of eq and obtained good results for the viscosity of alkane–alkane mixtures. The Nguyenhuynh correlation is given by eq : η = exp [ ∑ i = 1 n c x i nobreak0em0.25em⁡ ln ( η i ) ] + n c − 1 100 ∑ i ≠ j n c x i x j true[ 1 2 ( η i 2 ...…”

Section: Theorymentioning

confidence: 99%

“…Nguyenhuynh et al modeled the viscosity of long-chain alkane–alkane mixtures and obtained overall deviations of 7.51% and 3.13%, using eq and eq , respectively. Nguyenhuynh et al . modeled the viscosity of alcohol + alcohol mixtures and using eq and eq , they obtained overall deviations of 4.60% and 2.60%, respectively.…”

Section: Theorymentioning

confidence: 99%

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Study of Nonideality Behavior of p-Methylacetophenone and 1-Alkanol Mixtures from Measurement and Modeling of Density and Viscosity

2023

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The aim of this work is to investigate experimentally and theoretically thermophysical properties (density and viscosity) and derived properties (excess molar volume and viscosity deviation) of pmethylacetophenone + alkanols (C5 to C9) in the range of 293.15 to 323.15 K and a pressure of 0.1 MPa. The properties studied were density, viscosity, excess molar volume, and deviation in viscosity. To model the density of the liquid mixtures, we used the perturbed chain-statistical associating fluid theory equation of state (PC-SAFT EoS) and the volume translated Peng-Robinson-Stryjek-Vera equation of state (VTPRSV EoS). Using a correlation approach an overall deviation of 0.34% and 0.28% was obtained, respectively, while good predictive results were obtained (0.44% using PC-SAFT EoS and 0.46% using VTPRSV EoS). Also, we use two correlations without fitted parameters (Kendall-Munroe correlation and Nguyenhuynh correlation) to model the experimental viscosity and obtained an overall deviation of 5.07% and 3.07%. In addition, the Redlich−Kister correlation (with three fitted parameters) was able to correctly correlate the excess molar volume and the deviation in viscosity for all mixtures. Finally, the results obtained from the work have been discussed in terms of the nature of molecular interactions between the components of the p-methylacetophenone + alkanol mixture.

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Section: Resultssupporting

confidence: 90%

Section: Theorymentioning

confidence: 99%

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Study of Nonideality Behavior of p-Methylacetophenone and 1-Alkanol Mixtures from Measurement and Modeling of Density and Viscosity

2023

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“…Viscosity is a crucial thermodynamic property of all types of solutions [8][9][10][11][12][13][14] as it helps to characterize the purity of a product. In the cosmetic industry, viscosity can be modified to create appropriate emulsions in formulations [15].…”

Section: Introductionmentioning

confidence: 99%

A New Mathematical Model for the Characterization of Viscosity Variations in the Aqueous Solutions of Monoalcohols and Polyalcohols

et al. 2023

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This study aims to investigate the viscosity of binary mixtures of water with different monoalcohols and polyalcohols. The viscosity values of the mixtures of methanol, ethanol, 1-propanol, and 2-propanol were taken from a study published by Herraez and Belda (2004). The values for ethylene glycol, glycerin, and sorbitol were measured using a similar protocol. The viscosity of the mixture is expressed as a function of the molar fraction of the alcohols that ranges from 0 (pure solvent, water in this case) to 1 (pure solute). To represent the viscosity of these mixtures, a new variable, Φ, was introduced. This representation provides a function, η = f(Φ), that has an exponential nature, with which excellent correlation coefficients are achieved with only one coefficient for monoalcohols or two coefficients for polyalcohols. Additionally, the variable Φ highlights the possible critical points, where physicochemical interactions occur between the components of the mixture.

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Some Experimental and Theoretical Studies on 2-Isopropoxyethanol and 1-Alkanols (C6 to C10)

Almasi,

Hernández,

Pouladi

2023

Int J Thermophys

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Free-volume theory coupled with modified group-contribution PC-SAFT for predicting the viscosities. II. Alcohols and their mixtures

Cited by 9 publications

References 62 publications

Study of Nonideality Behavior of p-Methylacetophenone and 1-Alkanol Mixtures from Measurement and Modeling of Density and Viscosity

Study of Nonideality Behavior of p-Methylacetophenone and 1-Alkanol Mixtures from Measurement and Modeling of Density and Viscosity

A New Mathematical Model for the Characterization of Viscosity Variations in the Aqueous Solutions of Monoalcohols and Polyalcohols

Some Experimental and Theoretical Studies on 2-Isopropoxyethanol and 1-Alkanols (C6 to C10)

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