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Dive into the research topics where Vinay Sanguri is active.

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Featured researches published by Vinay Sanguri.


Journal of Molecular Liquids | 2002

Thermal expansivity of multicomponent liquid systems

J. D. Pandey; S.B. Tripathi; Vinay Sanguri

Thermal expansivity of a number of binary and multicomponent molecular liquid mixture have been evaluated by applying various theoretical models viz. hard sphere and statistical mechanical theory. Formulism has been made. Computed values of thermal expansivity have been compared with experimental findings.


Physics and Chemistry of Liquids | 2008

Theoretical estimations of thermodynamic properties of liquid mixtures by Flory's statistical theory

J. D. Pandey; Vinay Sanguri

Florys statistical theory has been employed for the computation of ultrasonic velocity (u), density (ρ), internal pressure (P i), thermal expansion coefficient (α), isothermal compressibility (β T), adiabatic compressibility (β S), heat capacity at constant pressure (C P), heat capacity at constant volume (C V), heat capacities ratio (γ), pseudo-Gruneisen parameter (Γ), excess volume (V E) and excess heat capacity at constant pressure ( ) at varying temperatures for 10 binary and 5 ternary systems. The binary systems under investigation are: acetonitrile + benzene, benzene + DMF, acetonitrile + DMF, cyclohexanol + cyclohexane, piperidine + tetrahydropyran, piperidine + cyclohexane, tetrahydropyran + cyclohexane, benzene + p-xylene, benzene + p-dioxan, acetone + methyliodide, and the ternary systems are: benzene + chloroform + cyclohexane, toluene + chloroform + cyclohexane, chlorobenzene + chloroform + cyclohexane, dioxane + chloroform + cyclohexane and chlorobenzene + cyclohexane + n-heptane. The results of calculations show that for all the systems under consideration, the calculated values of various thermodynamic parameters show the same trend as observed experimentally. Fairly good agreement is found between theoretical and experimental values. The ultrasonic velocity of liquid mixtures is obtained using the most popular Flory theory without the help of any empirical relation.


Physics and Chemistry of Liquids | 2001

Surface tension of ternary liquid mixtures

J. D. Pandey; N. K. Soni; V. K. Singh; Vinay Sanguri

Abstract Surface tension has been measured by the differential capillary rise method for three ternary mixtures containing alkanes (hexane + cyclohexane+benzene, pentane + hexane + benzene and cyclohexane + heptane + toluene at 298.15\pm 0.1°K). The sign and magnitude of the excess surface tension and excess volume depend ultimately upon the chain length of the component of the mixtures. The results of the surface tension were compared with theoretical values obtained from Flory theory, Sanchez method, Brock-Bird relation and volume fraction statistics. There is reasonable agreement between theory and experiment.


Journal of Solution Chemistry | 1995

Viscosities of Quaternary Liquid Solutions

J. D. Pandey; Akhilesh Shukla; Vinay Sanguri; Siddharth Pandey

Viscosity of quaternary non-electrolyte solution carbon tetrachloride+ cyclohexane+benzene+toluene has been experimentally determined at 25°C. Experimental results of viscosity have been analyzed in the light of PFP theory and BAB method. A comparative study of the two approaches has been made. Excellent agreement between theoretical and experimental findings is achieved.


Pramana | 2005

A comparative study of non-linearity parameter for binary liquid mixtures

J. D. Pandey; Ranjan Dey; Vinay Sanguri; Jyotsna Chhabra; Tanuja Nautiyal

The present investigation comprises of theoretical evaluation of acoustic non-linearity parameter,B/A for equimolar binary mixtures, viz. chlorobenzene or 1-chloronaphthalene with a series of normal alkanes (n-Cn,n = 6, 8, 10, 12, 14, 16), and with a series of highly branched alkanes (br-Cn,n = 6, 8, 12, 16), viz. 2,2-dimethylbutane (br-C6), 2,2,4-trimethylpentane (br-C8), 2,2,4,6,6-pentamethylheptane (br-C12) and 2,2,4,4,6,8,8-heptamethylnonane (br-C16). Tong and Dong method, thermoacoustical method, Hartmann relation and Ballou relation have been employed to evaluateB/A. A comparative study ofB/A values obtained from the aforementioned methods has been made. The results are discussed on the basis of structural orientations of normal and branched alkanes.


Physics and Chemistry of Liquids | 2012

Thermodynamic properties of pure liquids within a generalized version of the hole theory

J. D. Pandey; Vinay Sanguri; D.K. Dwivedi

A generalized hole theory for computing the thermodynamic and acoustic properties of liquids and liquid mixtures has been developed. Ultrasonic velocity, isothermal compressibility and thermal expansivity of different pure liquids at 293.15 and 298.15 K are evaluated by using hole theory. The calculated values of ultrasonic velocities, isothermal compressibilities, and thermal expansivities are compared with the experimental findings. A fairly good agreement between experimental and calculated values is observed.


Pramana | 2000

Non-linearity parameter B/A of binary liquid mixtures at elevated pressures

J. D. Pandey; Jyotsna Chhabra; Ranjan Dey; Vinay Sanguri; Richa Verma


Journal of Molecular Liquids | 2007

Computation of isothermal compressibility, thermal expansivity and ultrasonic velocity of binary liquid mixtures using hole theory

J. D. Pandey; Vinay Sanguri; D.K. Dwivedi; K.K. Tiwari


Journal of Molecular Liquids | 2008

Thermodynamic properties of multicomponent systems and hole theory

Vinay Sanguri; D.K. Dwivedi; Nidhi Singh; Niti Pandey; J. D. Pandey


Journal of Molecular Liquids | 2010

Estimation of thermodynamic properties of multicomponent systems on the basis of generalized hole theory

J. D. Pandey; Tanu Srivastava; Prakash Chandra; D. K. Dwivedi; Vinay Sanguri

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Ranjan Dey

Birla Institute of Technology and Science

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D.K. Dwivedi

Ewing Christian College

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Niti Pandey

Indian Council of Agricultural Research

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