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Gupta, Manisha
- Thermoacoustical Analysis of Binary Mixtures of N-N-dimethyl formamide (DMF) with BAE and 1-BuOH
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1 Department of Physics, University of Lucknow, Lucknow-260007, IN
1 Department of Physics, University of Lucknow, Lucknow-260007, IN
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Journal of Pure and Applied Ultrasonics, Vol 39, No 3 (2017), Pagination: 71-78Abstract
Ultrasound techniques are unique and find wide applications and acceptance in all fields. Applications of ultrasonic have made possible not only the evaluation of physico-chemical properties of the mixtures/ solutions but also more reliability on the interpretation of molecular interactions. In view of the wide scope of molecular interactions between the highly polar compound of N-N-dimethylformamide with butylaminoethanol and 1-butylalcohol, ultrasonic velocity and densities have measured for these systems over the whole composition range at temperatures 293.15K, 298.15K, 303.15K, 308.15K and 313.15K under atmospheric pressure. To gain some insight into the several aggregations of molecular interactions present in these mixed solvents, deviation in ultrasonic velocity, excess acoustic impedance and excess pseudo Grüneisen parameter have been predicted. A qualitative analysis of the results is discussed in terms of the ion-dipole, ion-pair interactions, dispersive forces and hydrogen bonding prevailing in the binary mixtures. Further experimental data of these mixtures were also used to test the validity of various mixing rules/ theory for ultrasonic velocity.Keywords
Ultrasonic, Molecular Interactions, Thermophysical, Deviation in Velocity, Excess Pseudo Grüneisen Parameter.Full Text
References
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- Estimation of Refractive Index, Viscosity, Ultrasonic Velocity and Surface Tension of Binary Mixtures of Ethyl Chloroacetate with Aromatic Liquids
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Authors
Affiliations
1 Department of Physics, University of Lucknow, Lucknow-226007, IN
2 Department of Chemistry, University of Allahabad, Allahabad-211002, IN
1 Department of Physics, University of Lucknow, Lucknow-226007, IN
2 Department of Chemistry, University of Allahabad, Allahabad-211002, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 28, No 2-4 (2006), Pagination: 51-58Abstract
Refractive indices, viscosity at 298 K, 303 K and 308 K and ultrasonic velocity at 298 K of five binary mixtures of ethyl chloroacetate (ECA) with benzene, toluene, 1,4-dimethyl benzene (p-xylene), 1,3,5-trimethyl benzene (mesitylene), and methoxybenzene (anisole) have been evaluated theoretically using various empirical relations applicable to binary mixtures. Relative merits and interrelation in these mixing rules have been discussed. An excellent agreement has been found between the experimental values with the respective values obtained from the mixing rules. Also, the extended statistical theory of Flory (FST) has been used to predict the surface tension of five binary systems at 298K. The values of surface tension thus obtained have been utilized to compute ultrasonic velocity using Auerbach relation. Theoretical values have been compared with the experimental values. The results have been discussed in terms of average percentage deviation (APD).Full Text
- Thermoacoustical and Excess Properties of Binary Mixtures Poly (Ethylene Glycol) Butyl Ether (PEGBE) 206 with 1-Butanol and 2-(Methylamino) Ethanol (MAE)
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Authors
Affiliations
1 Department of Physics, University of Lucknow, Lucknow-226007, IN
1 Department of Physics, University of Lucknow, Lucknow-226007, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 40, No 2 (2018), Pagination: 31-38Abstract
In the view of the wide scope of experimental values of thermodynamical properties that allow us to establish new predictive interactions and information about the mixtures of Poly ethylene glycol butyl ether (PEGBE) 206 with 1-Butanol and 2-Methylamino ethanol (MAE) respectively, measurement of the thermophysical properties such as ultrasonic velocity, density and refractive index of binary over the whole composition range at 298.15 K, 303.15 K and 313.15 K under atmospheric pressure. To gain some insight into the molecular interactions present in these mixed solvents, thermodynamic parameters like polarisability, molar refraction, free volume, deviation in ultrasonic velocity, excess internal pressure and molar refraction deviation have been derived. The intermolecular interactions were discussed on the basis of the measured and the derived properties. The caluculated excess values and deviation quantities been fitted to Redlich-Kister polynomial equation. The results were analyzed in terms of molecular interactions and mixing behavior between mixture components with taking into consideration effect of temperature.Keywords
Ultrasonic Velocity, Polarisability, Excess Intermolecular Free Length, Redlich-Kister Polynomial Equation.Full Text
References
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