Temperature and Concentration Dependent Acoustical Analysis of MgFe2O4 Nanoparticles-Ethylene Glycol Liquid Suspensions

In present work, MgFe₂O₄-ethylene glycol nanofluids of various concentrations have been synthesized using ultrasonication method. The powdered MgFe₂O₄ nanoparticles are characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Particle size distribution of the nanoparticles in the base fluid has also been studied with the help of acoustical particle sizer (APS-100). Temperature dependent ultrasonic velocity, adiabatic compressibility and acoustic impedance at different concentration (0.1, 0.2, 0.5, 1.0 and 2.0 vol%) of MgFe₂O₄ have been investigated using ultrasonic interferometer. This paper is interested in systematic experimental study on the response of MgFe₂O₄-ethylene glycol nanofluids to the ultrasonic wave propagation. The main focus of the study is to understand the particle-fluid interaction and particle-particle interaction as function of concentration and temperature. The obtained results are discussed in correlation with the suitability of the present nanofluids for industrial application.