Study of Viscous Behavior for Amino Acid L-Glutamine Aqueous N,N Dimethyl Formamide Solution at Different Temperatures

被引：1

作者：

Mahdi, Suhair Abdulhadi ^{[1
]}

Farhan, Ahlam Mohammed ^{[2
]}

机构：

[1] Mustansiriyah Univ, Coll Sci, Dept Chem, Baghdad, Iraq

[2] Univ Baghdad, Coll Sci Women, Dept Chem, Baghdad, Iraq

来源：

EGYPTIAN JOURNAL OF CHEMISTRY | 2021年 / 64卷 / 05期

关键词：

Volumetric; Viscometric; Amino Acid; L-glutamine; Dimethyl formamide; VISCOSITY; FRICTION;

D O I：

10.21608/EJCHEM.2021.41180.2834

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The densities (rho) and kinematic viscosities (nu) which was converted to the absolute viscosity (eta) 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 (phi v), limiting apparent molar volume (phi v degrees) 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 (Delta mu(#)) 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.

引用

页码：2369 / 2375

页数：7

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