Studies of viscosity and excess molar volume of binary mixtures 5. Characterization of excess molar volume of 1-alkanol with alkylamines, dialkylamines and trialkylamines in terms of the ERAS model

The excess molar volumes V-E of n-alkylamine, di-n-alkylamine, and tri-n-alkylamine with a series of l-alkanols at 298.15, 303.15 and 313.15 K have been characterized in terms of the ERAS model which accounts for hydrogen bonding effects as well as for free volume effects in associating mixtures. The results obtained by adjusting the model parameters reveal a strong cross-association between the unlike molecules in the mixture resulting from strong negative values for the hydrogen bonding energy and the hydrogen bonding volume. (C) 2004 Elsevier B.V. All rights reserved.