Dielectric Relaxation of Polar Molecules in Benzene Medium at Microwave

Gedam, S. B.; Suryavanshi, B. M.

doi:10.7763/ijapm.2013.v3.226

Cited by 1 publication

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“…The dielectric relaxation studies in microwave region have been done by many researchers for polar molecules and their binary mixtures in the dilute solution of non polar solvents. [3][4][5][6][7][8][9] The dielectric investigations on binary mixtures of ethanol and N, N-dimethylformamide (DMF) with benzene at various temperatures and at a fixed frequency is done by Sharma et. al., 10 with the help of standing microwave techniques.…”

Section: Introductionmentioning

confidence: 99%

Microwave Dielectric Measurements of 4-Nitroacetanilide at Different Temperatures in Carbon Tetrachloride Solution

Manro¹,

Jain²

2018

Orient. J. Chem

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The dielectric properties of 4-Nitroacetanilide have been discussed at four different temperatures in the dilute solution of carbon tetrachloride at a fixed frequency of 9.27GHz. The values of dielectric constant (εʹ), dielectric loss (εʺ), permittivity at an optical frequency (ε∞) and permittivity at a static frequency (ε0) are measured at different temperatures and mole fractions. The values of these dielectric parameters are used to calculate the values of relaxation time for overall molecular rotation (τ1), relaxation time for intramolecular rotation (τ2), most probable relaxation time (τ0) and dipole moment (μ) at different temperatures. In the present investigation we have found higher values of τ2 which indicate the existence of more than one relaxation process in the solution. The values of energy activation parameters for dielectric relaxation process (∆Fε, ∆Hε and ∆Sε) and viscous flow process (∆Fη, ∆Hη and ∆Sη) are also determined and compared for 4-Nitroacetanilide with carbon tetrachloride at different temperatures. It is observed that we may treat both the process as a rate process.

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Section: Introductionmentioning

confidence: 99%