Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9633540 | The Journal of Chemical Thermodynamics | 2005 | 11 Pages |
Abstract
The thermophysical parameters, viz. excess molar volume VE, ultrasonic speed u, viscosity η and spectroscopic parameters, viz. IR and 1H NMR have been measured for the mixtures of pyrrolidin-2-one and isomeric butanediol (1,2-, 1,3-, 1,4- and 2,3-BTD) over the whole composition range at 308.15 K. Results indicate that intermolecular interactions for different mixtures increase in the order: 2,3-BTD < 1,2-BTD < 1,3-BTD < 1,4-BTD. The partial and apparent molar quantities QiE, isentropic compressibility KSE, excess viscosity ηE and excess Gibbs free energies of activation for viscous flow ÎaGâE have also been estimated and analyzed. The spectroscopic measurements (IR and 1H NMR) confirm that the interaction between unlike molecules takes place through hydroxyl groups of isomeric butanediol. A good agreement is obtained between excess quantities and spectroscopic data.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
S.K. Mehta, Ganga Ram, K.K. Bhasin,