Rheological non-Newtonian behaviour of ethylene glycol-based Fe<sub>2</sub>O<sub>3 </sub>nanofluids
<p>Abstract</p> <p>The rheological behaviour of ethylene glycol-based nanofluids containing hexagonal scalenohedral-shaped <it>α</it>-Fe<sub>2</sub>O<sub>3 </sub>(hematite) nanoparticles at 303.15 K and particle weight concentrations up...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2011-01-01
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| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | http://www.nanoscalereslett.com/content/6/1/560 |
| _version_ | 1797714791402307584 |
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| author | Pastoriza-Gallego María Lugo Luis Legido José Piñeiro Manuel |
| author_facet | Pastoriza-Gallego María Lugo Luis Legido José Piñeiro Manuel |
| author_sort | Pastoriza-Gallego María |
| collection | DOAJ |
| description | <p>Abstract</p> <p>The rheological behaviour of ethylene glycol-based nanofluids containing hexagonal scalenohedral-shaped <it>α</it>-Fe<sub>2</sub>O<sub>3 </sub>(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 <it>G</it>', loss modulus <it>G</it>″ and damping factor were determined as a function of the frequency showing viscoelastic behaviour for all samples.</p> |
| first_indexed | 2024-03-12T07:58:03Z |
| format | Article |
| id | doaj.art-a258442263c444e194c3f589ee365181 |
| institution | Directory Open Access Journal |
| issn | 1931-7573 1556-276X |
| language | English |
| last_indexed | 2024-03-12T07:58:03Z |
| publishDate | 2011-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-a258442263c444e194c3f589ee3651812023-09-02T20:06:00ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2011-01-0161560Rheological non-Newtonian behaviour of ethylene glycol-based Fe<sub>2</sub>O<sub>3 </sub>nanofluidsPastoriza-Gallego MaríaLugo LuisLegido JoséPiñeiro Manuel<p>Abstract</p> <p>The rheological behaviour of ethylene glycol-based nanofluids containing hexagonal scalenohedral-shaped <it>α</it>-Fe<sub>2</sub>O<sub>3 </sub>(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 <it>G</it>', loss modulus <it>G</it>″ and damping factor were determined as a function of the frequency showing viscoelastic behaviour for all samples.</p>http://www.nanoscalereslett.com/content/6/1/560nanofluidrheologyhematiteferrofluidsstorage modulusloss modulusnanoparticlesshear thinning |
| spellingShingle | Pastoriza-Gallego María Lugo Luis Legido José Piñeiro Manuel Rheological non-Newtonian behaviour of ethylene glycol-based Fe<sub>2</sub>O<sub>3 </sub>nanofluids Nanoscale Research Letters nanofluid rheology hematite ferrofluids storage modulus loss modulus nanoparticles shear thinning |
| title | Rheological non-Newtonian behaviour of ethylene glycol-based Fe<sub>2</sub>O<sub>3 </sub>nanofluids |
| title_full | Rheological non-Newtonian behaviour of ethylene glycol-based Fe<sub>2</sub>O<sub>3 </sub>nanofluids |
| title_fullStr | Rheological non-Newtonian behaviour of ethylene glycol-based Fe<sub>2</sub>O<sub>3 </sub>nanofluids |
| title_full_unstemmed | Rheological non-Newtonian behaviour of ethylene glycol-based Fe<sub>2</sub>O<sub>3 </sub>nanofluids |
| title_short | Rheological non-Newtonian behaviour of ethylene glycol-based Fe<sub>2</sub>O<sub>3 </sub>nanofluids |
| title_sort | rheological non newtonian behaviour of ethylene glycol based fe sub 2 sub o sub 3 sub nanofluids |
| topic | nanofluid rheology hematite ferrofluids storage modulus loss modulus nanoparticles shear thinning |
| url | http://www.nanoscalereslett.com/content/6/1/560 |
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