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Rheological non-Newtonian behaviour of ethylene glycol-based Fe2O3 nanofluids

Pastoriza-Gallego, Mari­a Jose and Lugo, Luis and Legido, Jose Luis and Pineiro, Manuel M (2011) Rheological non-Newtonian behaviour of ethylene glycol-based Fe2O3 nanofluids. NANOSCALE RESEARCH LETTERS, 6 (1). pp. 1-7. ISSN 1931-7573 (Print) 1556-276X (Online)

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Official URL: http://www.nanoscalereslett.com/content/6/1/560

Abstract

The rheological behaviour of ethylene glycol-based nanofluids containing hexagonal scalenohedral-shaped α-Fe2O3 (hematite) nanoparticles at 303.15 K and particle weight concentrations up to 25% has been carried out using a cone-plate Physica MCR rheometer. The tests performed show that the studied nanofluids present non-Newtonian shear-thinning behaviour. In addition, the viscosity at a given shear rate is time dependent, i.e. the fluid is thixotropic. Finally, using strain sweep and frequency sweep tests, the storage modulus G', loss modulus G″ and damping factor were determined as a function of the frequency showing viscoelastic behaviour for all samples.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
Material Science > Nanochemistry
ID Code:11610
Deposited By:M T V
Deposited On:05 Jan 2012 09:17
Last Modified:05 Jan 2012 09:17

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