caa a22 4500 605466998 CHVBK 20210128100309.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s00397-015-0868-5 doi (NATIONALLICENCE)springer-10.1007/s00397-015-0868-5 Magnetorheological behaviour of propylene glycol-based hematite nanofluids [Elektronische Daten] [Jésica Calvo-Bravo, David Cabaleiro, Manuel Piñeiro, Luis Lugo] The study of nanofluids represents an innovative research area with remarkable development. Properties of ferric magnetic nanofluids, also denoted as ferrofluids, under the influence of an external magnetic field have attracted increasing attention. A set-up for performing rheological and magnetorheological tests of propylene glycol-based hematite (α-Fe203) nanofluids is presented. The nanoparticle concentration dependence of the magnetorheological properties of this nanofluid was analysed at 303.15K, ranging from 0.2 to 6.18vol%, while external magnetic fields up to 0.7T were applied. The rheological and magnetorheological experiments were performed using a rotational Physica MCR 101 rheometer, (Anton Paar), which is equipped with a magnetorheological device (MRD 170/1T) to control the magnetic flux density. A detailed study about the thixotropic behaviour of the samples as well as viscosity curves of magnetization and demagnetization responses, an analysis of the fractal dimension of the aggregates and conclusions about the magnetic field effect on the size of formed aggregates as a function of concentration has been developed in this work. Rheological tests show that the nanofluid studied presents non-Newtonian shear thinning, thixotropic and viscoelastic behaviour. Finally, the magnetic saturation of the material has been studied. Springer-Verlag Berlin Heidelberg, 2015 Nanofluid nationallicence Hematite nationallicence Magnetorheology nationallicence Magnetic field nationallicence Fractal dimension nationallicence Thixotropy nationallicence Calvo-Bravo Jésica Departamento de Física Aplicada, Facultade de Ciencias, Universidade de Vigo, E-36310, Vigo, Spain aut Cabaleiro David Departamento de Física Aplicada, Facultade de Ciencias, Universidade de Vigo, E-36310, Vigo, Spain aut Piñeiro Manuel Departamento de Física Aplicada, Facultade de Ciencias, Universidade de Vigo, E-36310, Vigo, Spain aut Lugo Luis Departamento de Física Aplicada, Facultade de Ciencias, Universidade de Vigo, E-36310, Vigo, Spain aut Rheologica Acta Springer Berlin Heidelberg 54/9-10(2015-10-01), 757-769 0035-4511 54:9-10<757 2015 54 397 https://doi.org/10.1007/s00397-015-0868-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00397-015-0868-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Calvo-Bravo Jésica Departamento de Física Aplicada, Facultade de Ciencias, Universidade de Vigo, E-36310, Vigo, Spain aut NATIONALLICENCE 700 1- Cabaleiro David Departamento de Física Aplicada, Facultade de Ciencias, Universidade de Vigo, E-36310, Vigo, Spain aut NATIONALLICENCE 700 1- Piñeiro Manuel Departamento de Física Aplicada, Facultade de Ciencias, Universidade de Vigo, E-36310, Vigo, Spain aut NATIONALLICENCE 700 1- Lugo Luis Departamento de Física Aplicada, Facultade de Ciencias, Universidade de Vigo, E-36310, Vigo, Spain aut NATIONALLICENCE 773 0- Rheologica Acta Springer Berlin Heidelberg 54/9-10(2015-10-01), 757-769 0035-4511 54:9-10<757 2015 54 397