화학공학소재연구정보센터
Fluid Phase Equilibria, Vol.136, No.1-2, 223-234, 1997
Thermodynamic properties of polyoxyethyleneglycol dimethyl ether plus n-alkane mixtures
Excess molar volumes V-m(E) at 278.15, 288.15, 298.15 and 308.15 K and atmospheric pressure were obtained from density measurements with a vibrating-tube densimeter for the mixtures CH3O(CH2CH2O)(m)CH3 (m = 2, diglyme; m = 3, triglyme; m = 4, tetraglyme) + n-dodecane. These results allowed us to calculate isobaric thermal expansivities ct at 298.15 K. We also report excess molar isobaric heat capacities C-p(E) at atmospheric pressure measured with a micro DSC II differential scanning calorimeter for the systems triglyme + n-heptane at 288.15, 298.15 and 308.15 K and triglyme + n-dodecane at 283.15, 288.15, 298.15 and 308.15 K.