Rheological non-Newtonian behaviour of ethylene glycol-based Fe(2)O(3 )nanofluids

The rheological behaviour of ethylene glycol-based nanofluids containing hexagonal scalenohedral-shaped α-Fe(2)O(3 )(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 studi...

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Autores principales: Pastoriza-Gallego, María Jose, Lugo, Luis, Legido, José Luis, Piñeiro, Manuel M
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2011
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3214201/
https://www.ncbi.nlm.nih.gov/pubmed/22027018
http://dx.doi.org/10.1186/1556-276X-6-560
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author Pastoriza-Gallego, María Jose
Lugo, Luis
Legido, José Luis
Piñeiro, Manuel M
author_facet Pastoriza-Gallego, María Jose
Lugo, Luis
Legido, José Luis
Piñeiro, Manuel M
author_sort Pastoriza-Gallego, María Jose
collection PubMed
description The rheological behaviour of ethylene glycol-based nanofluids containing hexagonal scalenohedral-shaped α-Fe(2)O(3 )(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.
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spelling pubmed-32142012011-11-14 Rheological non-Newtonian behaviour of ethylene glycol-based Fe(2)O(3 )nanofluids Pastoriza-Gallego, María Jose Lugo, Luis Legido, José Luis Piñeiro, Manuel M Nanoscale Res Lett Nano Express The rheological behaviour of ethylene glycol-based nanofluids containing hexagonal scalenohedral-shaped α-Fe(2)O(3 )(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. Springer 2011-10-25 /pmc/articles/PMC3214201/ /pubmed/22027018 http://dx.doi.org/10.1186/1556-276X-6-560 Text en Copyright ©2011 Pastoriza-Gallego et al; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Nano Express
Pastoriza-Gallego, María Jose
Lugo, Luis
Legido, José Luis
Piñeiro, Manuel M
Rheological non-Newtonian behaviour of ethylene glycol-based Fe(2)O(3 )nanofluids
title Rheological non-Newtonian behaviour of ethylene glycol-based Fe(2)O(3 )nanofluids
title_full Rheological non-Newtonian behaviour of ethylene glycol-based Fe(2)O(3 )nanofluids
title_fullStr Rheological non-Newtonian behaviour of ethylene glycol-based Fe(2)O(3 )nanofluids
title_full_unstemmed Rheological non-Newtonian behaviour of ethylene glycol-based Fe(2)O(3 )nanofluids
title_short Rheological non-Newtonian behaviour of ethylene glycol-based Fe(2)O(3 )nanofluids
title_sort rheological non-newtonian behaviour of ethylene glycol-based fe(2)o(3 )nanofluids
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3214201/
https://www.ncbi.nlm.nih.gov/pubmed/22027018
http://dx.doi.org/10.1186/1556-276X-6-560
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