Dielectric studies on binary polar mixtures of propanoic acid with esters

Thenappan, T.; Devaraj, Arun

doi:10.1016/j.molliq.2005.04.010

Cited by 84 publications

(32 citation statements)

References 11 publications

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“…Similar behavior is observed at all temperatures for other amines used in this study. Thenappan et al, 15 have concluded on similar lines for the mixture of ester and acid.…”

Section: Resultsmentioning

confidence: 77%

Untitled

2013

IJPSR

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ABSTRACT:The homo and hetero interaction in the binary mixtures of Ethyl acetate + n-Butylamine, Ethyl acetate + Cyclohexylamine and Ethyl acetate + Diethylamine has been investigated through the orientation of dipoles using dielectric polarization method. The dielectric and thermodynamic parameters such as Kirkwood correlation factor, Excess permittivity, Bruggemann factor and Dipolar excess free energy for the above systems have been calculated from the experimentally measured values of capacitance and refractive index of solutions, at temperatures 303K, 313K and 323K.In all the studied systems, the dielectric parameters obtained show systematic change in the molecular structure with the concentration of amine in the solution. It indicates that the β-multimer formation due to the presence of hetero interaction between the components of above mixtures.

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“…Similar behavior is observed at all temperatures for other amines used in this study. Thenappan et al, 15 have concluded on similar lines for the mixture of ester and acid.…”

Section: Resultsmentioning

confidence: 77%

Untitled

2013

IJPSR

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“…Hence, the interaction in terms of volume changes between the components in the mixture is minimum. 33 Coefficients of the Redlich-Kister equation for the mathematical representation of deviation in excess functions and the standard deviation (Þ calculated for all the excess properties under study for EGMPE þ 1-BuOH and EGMPE þ1-BuOH at temperatures 303.15, 313.15 and 323.15 K are presented in Table 5. …”

Section: Resultsmentioning

confidence: 99%

Dielectric studies of binary mixtures of ethylene glycol mono phenyl ether with 1-butanol at different temperatures

Chaube

Rana

2017

J. Adv. Dielect.

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Static permittivity ("), refractive index (n) and density () of binary mixtures of ethylene glycol mono phenyl ether (EGMPE) with 1-butanol (1-BuOH) over the entire range of mole fraction and at temperatures (T ¼ 303:15, 313.15 and 323.15 K) have been measured. From the experimental data, parameters such as excess static permittivity (" E ), excess permittivity at optical frequency (" E 1 ), effective Kirkwood correlation factor (g eff ), corrective Kirkwood correlation factor (g f ) and Bruggeman factor (f b ) have been calculated to obtain qualitative and quantitative information about the complex formation through H-bond in binary system. In order to predict the static permittivity of polar-polar binary mixtures six mixing rules were applied and for refractive index five mixing rule were applied. Experimental results of permittivity (") and refractive index (n) are compared with those obtained from theoretical calculations. Excess parameters were fitted to the Redlich-Kister type polynomial equation.

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“…Ethylmethyl ketone (EMK) is an important organic compound (CH 3 C(O)CH 2 CH 3 ) having moderate dielectric constant and dipolemoment =2.78D in the vapour phase. Dielectric relaxation studies of polar molecules in non-polar solvent using microwave absorption techniques have been studied by many researchers [3][4][5][6][7][8].The measurement have been made for the binary mixture of different mole-fraction of acetone and EMK at constant temperate 303K. The dielectric relaxation process has been found using Higasi's method.…”

Section: Introductionmentioning

confidence: 99%