On the density and viscosity of (water+dimethylsulphoxide) binary mixtures

Grande, María del Carmen; Juliá, Jorge Álvarez; García, Mariano; Marschoff, C.M.

doi:10.1016/j.jct.2006.12.012

Cited by 109 publications

(38 citation statements)

References 13 publications

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“…This result supports the conclusions obtained previously [20,21] which indicate that the use of polynomials, such as those employed in the Redlich -Kister, in fitting experimental data might lead to inconsistencies in the calculation of magnitudes obtained by differentiation.…”

Section: Physics and Chemistry Of Liquidssupporting

confidence: 91%

“…Of more general interest it is concluded that, as in the case of water + acetonitrile [20] and water + DMSO [21] binary mixtures, it is clear that using the correlation Equation (1) in the description of the density produces better and more consistent results than the usual Redlich -Kister approach. This follows from the values of root mean square deviation and, particularly, from the resulting values for partial molar volumes.…”

Section: Resultsmentioning

confidence: 99%

“…[19] However, and as it has been previously discussed, [20,21] when derivatives of the fitted magnitude are to be obtained, the use of polynomials might lead to the appearance of singularities that actually are mathematical artefacts. Thus, in the case of density we rely on the use of the function: Physics and Chemistry of Liquids 3 where ρ i * is the density of pure i and ) Figure 2.…”

Section: Discussionmentioning

confidence: 99%

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Density, sound velocity and refractive index in the water + 1,2-dimethoxyethane system

Grande

Juliá

Barrero

et al. 2014

Physics and Chemistry of Liquids

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Density, sound velocity and refractive index of binary mixtures of water + 1,2-dimethoxyethane mixtures were measured over the whole composition range and at the temperature interval from 293.15 to 323.15 K. Obtained density data for the pure components agree, within experimental error, with published values. However, in the case of binary mixtures, strong discrepancies with values calculated from the equation proposed in the literature for this system are found. Excess functions, isentropic compressibility coefficients and thermal expansion coefficients were calculated from experimental data. Partial molar volumes were obtained employing the exponential representation previously proposed by us which shows better results than the usual polynomial approach. Results are discussed on the grounds of the molecular characteristics obtained from Raman and NMR spectroscopy determinations on this system.

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Section: Physics and Chemistry Of Liquidssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Density, sound velocity and refractive index in the water + 1,2-dimethoxyethane system

Grande

Juliá

Barrero

et al. 2014

Physics and Chemistry of Liquids

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“…The viscosity can be calculated using eq 3 ( 23 − 25 ) where x 1 and x 2 denote the mole fractions of PEG 200 and DMAPA, respectively. η is the viscosity of mixtures, and η 1 and η 2 represent the viscosity values of pure PEG 200 and DMAPA, respectively.…”

Section: Results and Discussionmentioning

confidence: 99%

Binary System of Polyethylene Glycol 200 (1) + 3-Dimethylamino-1-propylamine (2) for CO₂ Absorption: Thermophysical Properties and Spectroscopic Study

et al. 2021

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As the concentration of CO 2 in the atmosphere keeps increasing, the development of a highly efficient CO 2 absorbent is highly desired. In this work, a binary mixture system of polyethylene glycol 200 (PEG 200) ( 1 ) + 3-dimethylamino-propylamine (DMAPA) ( 2 ) was used for CO 2 absorption. Considering the importance of thermophysical properties to binary solutions, the densities and viscosities of the PEG 200 ( 1 ) + DMAPA ( 2 ) mixture were measured at T = (298.15, 303.15, 308.15, 313.15, and 318.15) K and atmospheric pressure over the entire composition range. Based on the density and viscosity data, the excess properties and viscous flow thermodynamic parameters were calculated, respectively. To obtain the coefficients and to estimate the standard deviations between the experimental and calculated quantities, the excess molar volume ( V m E ), the viscosity deviation (Δη), and the excess Gibbs free energies of activation for viscous flow (Δ G* E ) were fitted to the Redlich–Kister equation. Furthermore, based on the results of UV–vis, FTIR, and 1 H NMR spectra, the intermolecular interaction of PEG 200 and DMAPA was discussed. Particularly, a strong intermolecular bonding is formed when the molar ratio of PEG 200 to DMAPA is about 1:2 because of the excess molar volume ( V m E ). On that account, a mixture of PEG 200 and DMAPA in a ratio of 1:2 was used for studying CO 2 absorption, and a CO 2 absorption of about 0.19 g per gram of absorbent was achieved at room temperature and atmosphere.

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“…Hydrodynamic radius R h and the radius of gyration R g for a single curcumin molecule in different solvents. The experimental values of solvent viscosities η S were taken from[38] and[39]. The self-diffusion coefficient D was calculated from the Stokes-Einstein equation(3).solvent R h , nm R g , nm η S , 10 −3 Pa·s D, 10 −5 cm 2 s −1 D self , 10 −5 cm 2 s −1…”

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confidence: 99%

On the properties of a single OPLS-UA model curcumin molecule in water, methanol and dimethyl sulfoxide. Molecular dynamics computer simulation results

Patsahan¹,

Ilnytskyi²,

Pizio³

2017

Condens. Matter Phys.

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The properties of model solutions consisting of a solute -single curcumin molecule in water, methanol and dimethyl sulfoxide solvents have been studied using molecular dynamics (MD) computer simulations in the isobaric-isothermal ensemble. The united atom OPLS force field (OPLS-UA) model for curcumin molecule proposed by us recently [ J. Mol. Liq., 2016, 223, 707] in combination with the SPC/E water, and the OPLS-UA type models for methanol and dimethyl sulfoxide have been applied. We have described changes of the internal structure of the solute molecule induced by different solvent media in very detail. The pair distribution functions between particular fragments of a solute molecule with solvent particles have been analyzed. Statistical features of the hydrogen bonding between different species were explored. Finally, we have obtained a selfdiffusion coefficient of curcumin molecules in three model solvents.

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On the density and viscosity of (water+dimethylsulphoxide) binary mixtures

Cited by 109 publications

References 13 publications

Density, sound velocity and refractive index in the water + 1,2-dimethoxyethane system

Density, sound velocity and refractive index in the water + 1,2-dimethoxyethane system

Binary System of Polyethylene Glycol 200 (1) + 3-Dimethylamino-1-propylamine (2) for CO₂ Absorption: Thermophysical Properties and Spectroscopic Study

On the properties of a single OPLS-UA model curcumin molecule in water, methanol and dimethyl sulfoxide. Molecular dynamics computer simulation results

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On the density and viscosity of (water+dimethylsulphoxide) binary mixtures

Cited by 109 publications

References 13 publications

Density, sound velocity and refractive index in the water + 1,2-dimethoxyethane system

Density, sound velocity and refractive index in the water + 1,2-dimethoxyethane system

Binary System of Polyethylene Glycol 200 (1) + 3-Dimethylamino-1-propylamine (2) for CO2 Absorption: Thermophysical Properties and Spectroscopic Study

On the properties of a single OPLS-UA model curcumin molecule in water, methanol and dimethyl sulfoxide. Molecular dynamics computer simulation results

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Product

Resources

About

Binary System of Polyethylene Glycol 200 (1) + 3-Dimethylamino-1-propylamine (2) for CO₂ Absorption: Thermophysical Properties and Spectroscopic Study