Heatable magnetic nanocomposites with Fe3O4 nanocubes

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dc.contributor.authorLarumbe Abuin, Silvia
dc.contributor.authorLecumberri, Cristina
dc.contributor.authorMonteserín, María
dc.contributor.authorFernández, Lorea
dc.contributor.authorMedrano Fernández, Ángel María
dc.contributor.authorGarayo Urabayen, Eneko
dc.contributor.authorGómez Polo, Cristina
dc.contributor.departmentCienciases_ES
dc.contributor.departmentZientziakeu
dc.contributor.departmentInstitute for Advanced Materials and Mathematics - INAMAT2en
dc.date.accessioned2025-02-07T12:49:13Z
dc.date.available2025-02-07T12:49:13Z
dc.date.issued2022-09-27
dc.date.updated2025-02-07T12:40:46Z
dc.description.abstractThe development of magnetic self-heating polymers is an area of great interest for many applications. The intrinsic magnetic properties of the magnetic fillers play a key role in the final heating capability of these nanocomposites. Thus, it has been already reported the improvement of the heating efficiency on Fe3O4 magnetic nanocubes with respect to spherical nanoparticles with the similar mean size1. This result is due to the contribution of the magnetic anisotropy giving rise to higher magnetic coercivity and as consequence, higher SAR (Specific Absorption Rate) values. In this work, well- defined Fe3O4 nanocubes were synthesized through thermal decomposition processes with a mean particle diameter around 70 nm (TEM) (Fig. 1). The SAR values were estimated through the measurement of the AC hysteresis loops, obtaining values of around 900 W/g for the dispersion of the nanocubes in water and values of 350 W/g for the nanocubes dispersed in agar (0.5% wt), with a frequency of 403 kHz and a field amplitude of 30kA/m . In this case, the decrease of the SAR values is due to the inmovilization of the particles in the medium and hence, the Brownian movement of the particles. The temperature increase was also characterized, where a clear enhancement of the heating properties was obtained for nanocubes comparing with spherical nanoparticles of similar mean diameter (Fig. 2). Finally, the heating capacity of the nanocomposites (30% weight of magnetic nanoparticles) was studied through the application of an external AC magnetic field with a Helmholtz coil (319 kHz, 400A, 200G approximately, induction equipment model EasyHeat Ambrell). The effect of the thickness of the polymeric discs on the final temperature achieved was studied (2 and 4 mm thickness and 30 mm diameter). Thus, temperatures of 100 °C or 250 °C were reached after 2 min for the nanocomposites with thicknesses of 2 and 4 mm respectively.en
dc.description.sponsorshipThis research was funded by the Ministerio de Ciencia, Innovación y Universidades-Retos (Project RTI2018-096262-B-C41 MAITAI , Multidisciplinary Approach for the Implementation of new Technologies to prevent Accretion of Ice on aircraft).
dc.format.mimetypeapplication/pdfen
dc.format.mimetypevideo/mp4en
dc.identifier.citationLarumbe, S., Lecumberri, C., Monteserín, M., Fernández, L., Medrano, Á., Martín, F., Gómez-Polo, C., Garaio, E. (2022). Heatable magnetic nanocomposites with Fe3O4 nanocubes. Science Talks, 4, 1-2. https://doi.org/10.1016/j.sctalk.2022.100077.
dc.identifier.doi10.1016/j.sctalk.2022.100077
dc.identifier.issn2772-5693
dc.identifier.urihttps://academica-e.unavarra.es/handle/2454/53320
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofScience Talks (2022), vol. 4, 100077
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-096262-B-C41/ES/
dc.relation.publisherversionhttps://doi.org/10.1016/j.sctalk.2022.100077
dc.rights© 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license.
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectHeating efficiencyen
dc.subjectMagnetic nanoparticlesen
dc.subjectSARen
dc.subjectSelf-healing polymersen
dc.titleHeatable magnetic nanocomposites with Fe3O4 nanocubesen
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
relation.isAuthorOfPublicationa65f5238-3c22-46ad-a982-34cf82016864
relation.isAuthorOfPublicationef0a109c-acf3-4a8f-bdf8-c9b4fcbf1172
relation.isAuthorOfPublication5000e1d8-9426-4c7b-a770-586dbd2b2875
relation.isAuthorOfPublication.latestForDiscoverya65f5238-3c22-46ad-a982-34cf82016864

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