TY - JOUR
T1 - Densities and viscosities of (ethylene glycol - water) and (1,3-propanediol - water) binary mixtures at high temperatures of 373.2 and 473.2 K and high pressures up to 40 MPa
AU - Ono, Takumi
AU - Komatsu, Yushi
AU - Sasaki, Yui
AU - Ota, Masaki
AU - Sato, Yoshiyuki
AU - Takebayashi, Yoshihiro
AU - Furuya, Takeshi
AU - Inomata, Hiroshi
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant Number JP18K14040.
Publisher Copyright:
© 2021
PY - 2022/3/1
Y1 - 2022/3/1
N2 - Densities and viscosities of ethylene glycol - water and 1,3-propanediol - water binary mixtures have been measured over the whole composition range at 373.2 K and 473.2 K and at pressures up to 40 MPa. The excess molar volumes combined with partial molar volumes, and viscosity deviations have been calculated from the measurement data. The activation Gibbs free energy of viscous flow has been also evaluated from the density and viscosity data. These results were compared with the previously reported results of the monohydric alcohol - water mixtures with the same carbon numbers to discuss the effect of hydroxyl group and alkyl chain length on these properties in the wide range of temperature and pressure. The physical properties of the alcohol - water mixtures were strongly influenced by the molecular structure of the alcohol molecules under the studied conditions. In particular, the excess molar volumes and viscosity deviations showed very different behaviors for monohydric and dihydric alcohol - water mixtures.
AB - Densities and viscosities of ethylene glycol - water and 1,3-propanediol - water binary mixtures have been measured over the whole composition range at 373.2 K and 473.2 K and at pressures up to 40 MPa. The excess molar volumes combined with partial molar volumes, and viscosity deviations have been calculated from the measurement data. The activation Gibbs free energy of viscous flow has been also evaluated from the density and viscosity data. These results were compared with the previously reported results of the monohydric alcohol - water mixtures with the same carbon numbers to discuss the effect of hydroxyl group and alkyl chain length on these properties in the wide range of temperature and pressure. The physical properties of the alcohol - water mixtures were strongly influenced by the molecular structure of the alcohol molecules under the studied conditions. In particular, the excess molar volumes and viscosity deviations showed very different behaviors for monohydric and dihydric alcohol - water mixtures.
KW - Density
KW - Dihydric alcohol - water mixture
KW - Excess molar volume
KW - Monohydric alcohol - water mixture
KW - Viscosity
KW - Viscosity deviation
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U2 - 10.1016/j.molliq.2021.118096
DO - 10.1016/j.molliq.2021.118096
M3 - Article
AN - SCOPUS:85120379106
VL - 349
JO - Journal of Molecular Liquids
JF - Journal of Molecular Liquids
SN - 0167-7322
M1 - 118096
ER -