Study of Viscous Behavior for Amino Acid L- Glutamine Aqueous N,N Dimethyl Formamide Solution at Different Temperatures | ||
| Egyptian Journal of Chemistry | ||
| Article 13, Volume 64, Issue 5, May 2021, Pages 2369-2375 PDF (737.18 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejchem.2021.41180.2834 | ||
| Authors | ||
| Suhair Abdulhadi Mahdi* 1; Ahlam Mohammed Farhan2 | ||
| 1Department of Chemistry, College of Science, University of Al-Mustansiriyah, Baghdad, Iraq | ||
| 2Department of Chemistry, College of science for Women, University of Baghdad, Baghdad, Iraq | ||
| Abstract | ||
| The densities () and kinematic viscosities (ν) which was converted to the absolute viscosity () from the product of the kinematic viscosity and the density of L-Glutamine have been measured at different temperatures 298.15, 303.15 and 313.15K in aqueous 20% (w/w) dimethyl formamide (DMF) under atmospheric pressure. The value of apparent molar volume (v), limiting apparent molar volume (v ͦ ) and viscosity data have been analyzed by using Jones-Dole equation, the Jones-Dole coefficients (A and B) were calculated and excess Gibbs free energy of activation of viscous flow (〖〗^) has been obtained to throw light on the mechanism of viscous flow. The results were interpreted strong ion-solvent interactions in these systems and also structure-maker in 20% DMF + 80% water mixed solvents. | ||
| Keywords | ||
| Volumetric; Viscometric; Amino Acid; L-glutamine; dimethyl formamide | ||
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