화학공학소재연구정보센터
Thermochimica Acta, Vol.561, 1-13, 2013
Thermodynamic study on some alkanediol solutions: Measurement and modeling
The densities rho and viscosities eta of 1,2-ethanediol with 1,2-propanediol or 1,3-propanediol, and 1,2-propanediol with 1,3-propanediol binary liquid mixtures over the entire concentration range at temperatures (298.15 to 308.15) K with 5K interval were measured. The experimental data were used to calculate the excess molar volume V-m(E), partial molar volume (V) over bar (m,f), partial molar volume at infinite dilution (V) over bar (infinity)(t) apparent molar volume V-phi i, coefficient of thermal expansion alpha(p), excess coefficient of thermal expansion alpha(E)(p) excess viscosity eta(E), excess Gibbs energy of activation Delta G(*E), and other thermodynamic parameters. A Redlich-Kister equation and Prigogine-Flory-Patterson (PFP) model was applied to correlate the excess molar volume results. Moreover, the viscosity data were correlated with the Grunberg-Nissan, Tamura-Kurata, Hind-Ubbelohde and Katti-Chaudhary equations. Good agreement was found between experimental data and modeling results. (C) 2013 Elsevier B.V. All rights reserved.