Studies of viscosity and excess molar volume of binary mixtures 3. 1-alkanol plus di-n-propylamine, and plus di-n-butylamine mixtures at 303.15 and 313.15 K

摘要

The excess molar volume V-E, the viscosity deviation Delta eta and the excess Gibbs energy of activation DeltaG*(E) of viscous flow have been investigated from density and viscosity measurements of 15 mixtures of ethanol, propanol. butanol, pentanol, heptanol, octanol and decanol with di-n-propylamine, and di-n-butylamine, and of hexanol with di-n-butylamine over the entire range of mole fractions at 303.15 and 313.15 K. The VE of all the systems are very large negative. Except for the ethanol with di-n-propylamine and di-n-butylamine mixtures, the magnitude of negative deviations in viscosity increases with chain length of alkanol. The results have been explained considering mixed association of alkanol with diamine through O-H . . .N bond. The viscosity data have been correlated with the equations of Grunberg and Nissan, Tamura and Kurata, Hind, McLaughlin and Ubbelohde, Katti and Chaudhri, McAllister, Heric, and of Auslaender. (C) 2001 Elsevier Science B.V. All rights reserved. [References: 48]