Ultrasonic absorption in critical binary mixture of perfluoromethylcyclohexane and carbon tetrachloride

Abdelraziq, Issam

doi:10.1121/1.428260

Cited by 6 publications

(9 citation statements)

References 19 publications

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“…used in the previous evaluation of C 7 F 14 -CCl 4 ultrasonic data [25], agrees with equation ( 7) if BF 1/2 = 5.8 is assumed. Hence, equation ( 8) is consistent with the scaling function…”

Section: Relaxation Ratesupporting

confidence: 79%

“…The inset shows the α/ν 2 data as a function of frequency ν at four temperatures. The data have been scanned from figure 1 of [25]. Dashed lines are given just to guide the eyes.…”

Section: Methodsmentioning

confidence: 99%

“…The ultrasonic attenuation data, that had been measured at frequencies between 5 and 25 MHz using a commercial pulseecho system, were taken from figure 1 of [25] with the aid of a digital graphics tool. At the six frequencies of measurement the original attenuation coefficients are shown as a function of temperature in figure 2.…”

Section: Methodsmentioning

confidence: 99%

“…Among such liquids are comparatively simple mixtures, the constituents of which do not associate. An example is the system perfluoromethylcyclohexane-carbon tetrachloride for which figure 1 shows experimental scaling function data [25], calculated according to the Bhattacharjee-Ferrell dynamic scaling model [19]:…”

Section: Introductionmentioning

confidence: 99%

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Dynamic scaling of the critical mixture perfluoromethylcyclohexane–carbon tetrachloride

Mirzaev¹,

Iwanowski²,

Kaatze³

2007

J. Phys. D: Appl. Phys.

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Ultrasonic attenuation, specific heats at constant pressure, static and dynamic light scattering as well as shear viscosity data of the perfluoromethylcyclohexane–carbon tetrachloride critical system have been re-evaluated in the light of the Bhattacherjee–Ferrell dynamic scaling model. The experimental sonic attenuation coefficients yield the theoretical form of the scaling function if a noncritical relaxation term is assumed to contribute to the total spectra in addition to the critical contribution. Evidence from noncritical ultrasonic spectra suggests the noncritical relaxation to be due to rotational isomerization of the perfluoromethylcyclohexane molecule. The amplitudes in the power laws of the fluctuation correlation length, the mutual diffusion coefficient and the relaxation rate of concentration fluctuations are ξ0 = (0.228 ± 0.021) nm, D0 = (1.24 ± 0.04) × 109 m2 s−1, and Γ0 = (47.5 ± 13) × 109 s−1, respectively. The amplitude of the critical term in the heat capacity is Cpc = (0.093 ± 0.002) J g−1 K−1 and the adiabatic coupling constant results as g = 0.126.

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“…used in the previous evaluation of C 7 F 14 -CCl 4 ultrasonic data [25], agrees with equation ( 7) if BF 1/2 = 5.8 is assumed. Hence, equation ( 8) is consistent with the scaling function…”

Section: Relaxation Ratesupporting

confidence: 79%

“…The inset shows the α/ν 2 data as a function of frequency ν at four temperatures. The data have been scanned from figure 1 of [25]. Dashed lines are given just to guide the eyes.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dynamic scaling of the critical mixture perfluoromethylcyclohexane–carbon tetrachloride

Mirzaev¹,

Iwanowski²,

Kaatze³

2007

J. Phys. D: Appl. Phys.

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“…υ is critical exponent=0.64, χ σ υ is critical exponent=0.037 and σ 0 is the noncritical part of the measured electrical conductivity which represents the electrical conductivity at inifinite temperature [10][11][12][13][14][15][16][17].…”

Section: Behavior Of Electrical Conductivity Above the Critical Pointmentioning

confidence: 99%

Critical Behavior of the Electrical Conductivity for the Binary Mixture of Water and Phenol

HK¹,

IR²

2016

J Material Sci Eng

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The dynamic viscosity was measured for water-phenol binary mixture at several concentrations and temperatures to determine the critical concentration and critical temperature. The critical concentration was determined at XC=3.90% by weight of phenol, the critical temperature was TC=67.0°C using the viscosity measurement while TC=67.8°C from an indication of electrical conductivity measurements. The electrical conductivity measurements were recorded for water-phenol binary mixture at different temperatures and concentrations. The electrical conductivity measurements for various concentrations (0.00%, 10.17%, 20.80% and 50.00%) by weight of phenol were fitted by using Arhenius equation. The activation energy and the electrical conductivity at infinite temperature were calculated for several concentrations. The electrical conductivity as a function of temperature was fitted by using power law above the critical temperature. The noncritical part of the measured electrical conductivity was found to be 30.26 µS/cm and the critical exponent value was 0.0321. The molar electrical conductivity was calculated and plotted by using Walden rule. The slope of Walden plot was found to be 0.9439 so the water -phenol mixture was classified as a poor ionic mixture.

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Modification of the Fixmen’s, Kawasaki’s, Hornowski’s, Mistura’s, and Chapan’s analytic function in binary liquid mixtures

2018

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Ultrasonic absorption in critical binary mixture of perfluoromethylcyclohexane and carbon tetrachloride

Cited by 6 publications

References 19 publications

Dynamic scaling of the critical mixture perfluoromethylcyclohexane–carbon tetrachloride

Dynamic scaling of the critical mixture perfluoromethylcyclohexane–carbon tetrachloride

Critical Behavior of the Electrical Conductivity for the Binary Mixture of Water and Phenol

Modification of the Fixmen’s, Kawasaki’s, Hornowski’s, Mistura’s, and Chapan’s analytic function in binary liquid mixtures

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