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Critical Behavior of the Ultrasonic Attenuation for the Binary Mixture of Water and Phenol

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The dynamic shear viscosity of the binary liquid mixture water – phenol was measured for different temperatures and concentrations using the glass capillary and digital viscometers. Dynamic shear viscosity anomaly was detected near the critical temperature Tc = 67.0 °C and the critical concentration xc = 33.9% by weight of phenol. The specific heat at constant pressure was calculated using the two scale factor universality and found to be 242 J/(kg K). The critical and the background isobaric thermal expansion coefficients were determined and found to be 2.73 · 10–3 °C–1 and 22.6 · 10–3 °C–1 respectively. Ultrasonic attenuation data at 9, 15, 30 and 35 MHz were analyzed using the dynamic scaling theory of Ferrell and Bhattacharjee. The values of αc/f 2 versus f –1.06 yields a straight line as predicted by the theory. The experimental values of α(xc, T)c (xc, Tc ) for water – phenol were compared to the scaling function F (ω*) and showed good agreement with the theory.
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Document Type: Research Article

Publication date: 2017-01-01

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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