On the definition of the excess permittivity of a fluid mixture

Iglesias, T.P.

doi:10.1016/j.jct.2008.01.027

Cited by 3 publications

(6 citation statements)

References 4 publications

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“…In this work and following the proof given in [1] but abandoning condition III, it is found an expression for the excess permittivity similar to the one in that work, but weighted by the volume fractions.…”

Section: Introductionmentioning

confidence: 52%

“…(b) Under hypothesis I, II, and III the excess permittivity is given in terms of the mole fraction, equation (1), as it was shown in [1]. Assumption III, however, implies that mole and volume fractions coincide, x i = / i so that equation (1), valid for ideal gases, can be considered a particular case of the more general result where the permittivity of the components are to be weighted by their volume fractions.…”

Section: Discussionmentioning

confidence: 99%

“…Recently a formal proof [1] established that the excess permittivity for a binary gas mixture, e E , is as follows:…”

Section: Introductionmentioning

confidence: 99%

“…It was mentioned in [1] that the proof given could be generalised to liquid mixtures, assuming that an ideal liquid mixture satisfies the same conditions as that of a mixture of ideal gases.…”

Section: Introductionmentioning

confidence: 99%

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On the definition of the excess permittivity of a fluid mixture. II

Iglesias

Reis

Fariña-Busto

2008

The Journal of Chemical Thermodynamics

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a b s t r a c tIn a previous work, an ideal fluid mixture is assumed to be a homogeneous linear and isotropic system that verifies the following conditions: (I) no interaction between molecules, (II) point-like molecules and (III) under fixed temperature and pressure conditions the number of molecules per unit volume is the same for both the individual components and the mixture. It was shown that for such ideal mixture the permittivity is the sum of the individual permittivities weighted with the mole fractions of the components. In this work it is shown that independently of the latter assumption the permittivity of the system can be expressed as the sum of the individual permittivities weighted with the volume fractions of the components.

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Section: Introductionmentioning

confidence: 52%

Section: Discussionmentioning

confidence: 99%

“…Recently a formal proof [1] established that the excess permittivity for a binary gas mixture, e E , is as follows:…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

On the definition of the excess permittivity of a fluid mixture. II

Iglesias

Reis

Fariña-Busto

2008

The Journal of Chemical Thermodynamics

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“…The result can be interesting for both designers of liquid mixtures, who usually apply the rule of additivity of permittivity, as well as for researchers who are looking for a relationship between dipolar interactions and the non-additive behavior of permittivity in liquid mixtures. 38,39 Figure 9a presents the dependence of the static permittivity of PC + DMSO mixtures on the mole fraction of DMSO (from Figure 3), at three chosen temperatures. Figure 9b presents the permittivity deviation from additivity (Δε S )…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Dipolar Self-Assembling in Mixtures of Propylene Carbonate and Dimethyl Sulfoxide as Revealed by the Orientational Entropy

2016

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This article presents the results of static dielectric studies performed on mixtures of two strongly polar liquids important from a technological point of view: propylene carbonate (PC) and dimethyl sulfoxide (DMSO). The dielectric data were analyzed in terms of the molar orientational entropy increment induced by the probing electric field. It was found that the two polar liquids in the neat state reveal quite different molecular organization in terms of dipole-dipole self-assembling: PC exhibits a dipolar coupling of the head-to-tail type, whereas in DMSO one observes extreme restriction of dipolar association in any form. In PC + DMSO mixtures, the disintegration of the dipolar ensembles of PC molecules takes place and the progress of that process is strictly proportional to the concentration of DMSO. The static permittivity of mixtures of such differently self-organized liquids exhibits a positive deviation from the additive rule and the deviation develops symmetrically within the concentration scale.

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On the definition of the excess permittivity of a fluid mixture. III: Dependence on frequency

Iglesias

Reis

2016

The Journal of Chemical Thermodynamics

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On the definition of the excess permittivity of a fluid mixture

Cited by 3 publications

References 4 publications

On the definition of the excess permittivity of a fluid mixture. II

On the definition of the excess permittivity of a fluid mixture. II

Dipolar Self-Assembling in Mixtures of Propylene Carbonate and Dimethyl Sulfoxide as Revealed by the Orientational Entropy

On the definition of the excess permittivity of a fluid mixture. III: Dependence on frequency

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