Dielectric and thermodynamic studies on a binary mixture of anisole with butyric or caprylic acid

Parthipan, G.; Arivazhagan, G.; Thenappan, T.

doi:10.1080/09500830701742419

Cited by 25 publications

(5 citation statements)

References 18 publications

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“…The third term ΔF 12 E represents the excess free energy due to short range interaction between dissimilar molecules. The long range interaction between the dipoles in the mixture can be identified from the values of ΔF 0r E [34].…”

Section: Excess Helmholtz Free Energy (δF E )mentioning

confidence: 99%

Dielectric Relaxation studies of Methyl acetate with 2-Alkoxyethanols using Time Domain Reflectometry Technique

Kumar¹,

Guganathan²,

Malathi³

et al. 2018

IJSRPAS

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Complex Dielectric spectra of Methyl acetate (MA) with 2-Alkoxyethanols like 2-methoxyethanol (2-ME), 2-ethoxyethanol (2-EE), 2-butoxyethanol (2-BE) for various concentrations over the frequency ranges from 10MHz to 20GHz at 308.15K were recorded using Time Domain Reflectometry (TDR). The dielectric constant, dielectric permittvity and dielectric loss were obtained from the TDR measurement. The molecular interaction parameters like relaxation time, Kirkwood correlation factors, Bruggeman factor, excess dielectric constant, excess inverse relaxation time and excess Helmholtz free energy of activation were also calculated. This study gives the information about the nature of molecular interaction between the participating liquid molecules.

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Section: Excess Helmholtz Free Energy (δF E )mentioning

confidence: 99%

Dielectric Relaxation studies of Methyl acetate with 2-Alkoxyethanols using Time Domain Reflectometry Technique

Kumar¹,

Guganathan²,

Malathi³

et al. 2018

IJSRPAS

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show abstract

“…The long range and short-range interactions between dipoles can be studied from the thermo dynamical parameter excess Helmholtz free energy (∆F E ) and its constituent parameters 30 . The value of E ∆F or represents the long range interaction between the dipoles in the mixture.…”

Section: Resultsmentioning

confidence: 99%

Excess Dielectric and Thermodynamical Studies on Hydrogen Bonded Binary Mixtures of Propan-1-ol with Methyl and Ethyl Benzoates

Sastry¹,

Sastry²,

Murthy³

2012

Chem Sci Trans

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The molecular interactions between the polar systems propan-1-ol with alkyl benzoates (methyl benzoate and ethyl benzoate) for various mole fractions at different temperatures were studied by determining the dielectric permittivity using-LF impedance analyzer, microwave bench and Abbe's refractometer in radio, microwave and optic frequency regions respectively. Dipole moment, excess dipole moment, excess Helmholtz free energy, excess permittivity, relaxation time, excess inverse relaxation time and excess thermodynamical values are calculated using experimental data. Hamiltonian quantum mechanical calculations are performed on both pure and equimolar binary systems of propan-1-ol with alkyl benzoates for the measurement of dipole moment using PC Spartan and Argus lab Modeling softwares and these theoretical values are in good agreement with the experimental values. These studies can give information on its structure and interaction.

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“…Cole -Cole Plot for the weight fraction of the solute W 2 = 0.031 at 323 K for system of dibutyl phthalate and isobutanol the concentrations and temperatures. This shows the absence of ionic structures [21,22]. On dilution the observed negative value of Δµ indicates the presence of hydrogen bonds between the partners.…”

Section: Figmentioning

confidence: 90%

Relaxation Studies of Ternary Mixtures of Dibutyl Phthalate with Octanol and Isobutanol in Benzene in the Microwave Region

Subramanian

Sathis

2016

ijsre

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The dielectric behaviour of isobutanol and octanol with dibutyl phthalate have been studied at microwave frequency (9.36 GHz) at three different temperatures 303 K, 308 K and 313 K. Different dielectric quantities like dielectric constant (ε′), dielectric loss (ε″), static dielectric constant (ε 0) and dielectric constant at optical frequency (ε α) have been determined. These values are used to evaluate the relaxation time (τ) and dipole moment of the mixture. The relaxation time is calculated by both Higasi's method and Cole-Cole method. The results are discussed to interpret molecular structure in terms of relaxation time and excess dipole moment in the medium. The complex system investigated shows maximum relaxation time values as the concentration of the solute increases as well as the temperature increases.

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Dielectric and thermodynamic studies on a binary mixture of anisole with butyric or caprylic acid

Cited by 25 publications

References 18 publications

Dielectric Relaxation studies of Methyl acetate with 2-Alkoxyethanols using Time Domain Reflectometry Technique

Dielectric Relaxation studies of Methyl acetate with 2-Alkoxyethanols using Time Domain Reflectometry Technique

Excess Dielectric and Thermodynamical Studies on Hydrogen Bonded Binary Mixtures of Propan-1-ol with Methyl and Ethyl Benzoates

Relaxation Studies of Ternary Mixtures of Dibutyl Phthalate with Octanol and Isobutanol in Benzene in the Microwave Region

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