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Research Journal of Pharmacy and Technology
Year : 2018, Volume : 11, Issue : 2
First page : ( 761) Last page : ( 765)
Print ISSN : 0974-3618. Online ISSN : 0974-360X.
Article DOI : 10.5958/0974-360X.2018.00143.9

Relaxation Analysis on Liquid Mixture of Ethylene Glycol/Diethylene Glycol and Benzonitrile in Benzene

Subramanian M.1, Parthipan G.2,*

1Dean, Fatima Michael College of Engineering and Technology, Madurai, Tamil Nadu, India

2Department of Physics, Vel Tech Multi Tech DR Rangarajan DR Sakunthala Engineering College, Avadi, Chennai-600 055. Tamilnadu, India

*Corresponding Author E-mail: phdparthipan@gmail.com

Online published on 12 June, 2018.

Abstract

The permittivity and the dielectric loss of ternary mixtures of equimolar concentrations of ethylene glycol/diethylene glycol with benzonitrile in benzene have been measured at 8.33GHz at 35°c. The permittivity and the dielectric loss have been plotted against concentration in wt. fraction. The slopes of these straight lines have been used for complex plane plots (a“ vs a’). The complex plane plots are Cole-Cole arcs. The distribution parameter (α), the most probable relaxation time(ί), the relaxation time for overall rotation of the molecule ί(1), the relaxation time for group rotation ί(2) and the excess dipole moment (Δμ) for various systems have been calculated by Cole-Cole and Higasi's methods. Data has been analyzed in terms of two-relaxation processes (i.e.) contribution from overall rotation and group rotation

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Keywords

Permittivity, dielectric loss, relaxation time, viscosity, activation free energy, excess dipole moment.

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