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Magnetic silica: epoxy composites with a nano- and micro-scale control

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dc.affiliation.dptoUC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Químicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Polímeros y Compositeses
dc.contributor.authorCrespo Ribadeneyra, María
dc.contributor.authorGonzález González, María
dc.contributor.authorPozuelo de Diego, Javier
dc.date.accessioned2017-04-06T10:15:58Z
dc.date.available2017-04-06T10:15:58Z
dc.date.issued2014-04-15
dc.description.abstractMultiscale composites with magnetic properties were prepared by incorporating Cu-Ni nanoferrites filled silica microparticles in an epoxy matrix. The size of the nanoferrites was controlled both by the structure of the silica template and the annealing temperature (700 and 900 °C) used during the synthesis procedure. The ferrite:silica particles prepared at 700 °C showed a narrow size distribution close to 8.3 nm with a superparamagnetic behaviour. A less symmetric size distribution was obtained when annealing was performed at 900 °C, with diameters ranging from 15 to 80 nm. The reinforcement incorporation increased up to 7 °C the glass transition temperature and 30 °C the decomposition temperatures of the composites. The proposed strategy permits the nanoscale control, by the trapping effect of the silica on the magnetic nanoparticles, as well as the control of the micro-scale distribution through a simple protocol. These composites could have potential applicability as EMI shielding materials, owing to their magnetic nature, lightweight and enhanced thermal stability.en
dc.description.sponsorshipThis work was supported by Nacopan (MAT2007-31173-E) and Nanomod (MAT2010-17091) from the Spanish Ministerio de Ciencia e Innovación.es
dc.format.extent8
dc.format.mimetypeapplication/pdf
dc.identifier.bibliographicCitationMaterials Chemistry and Physics, 2014, 144 (3), pp. 335-342
dc.identifier.doihttp://dx.doi.org/10.1016/j.matchemphys.2013.12.049
dc.identifier.issn0254-0584
dc.identifier.publicationfirstpage335
dc.identifier.publicationissue3
dc.identifier.publicationlastpage342
dc.identifier.publicationtitleMaterials Chemistry and Physicsen
dc.identifier.publicationvolume144
dc.identifier.urihttps://hdl.handle.net/10016/24476
dc.identifier.uxxiAR/0000014449
dc.language.isoengen
dc.publisherElsevieren
dc.relation.projectIDGobierno de España. MAT2007-31173-Ees
dc.relation.projectIDGobierno de España. MAT2010-17091es
dc.rights© Elsevier, 2014
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.ecienciaMaterialeses
dc.subject.ecienciaQuímicaes
dc.subject.otherMagnetic materialsen
dc.subject.otherNanostructuresen
dc.subject.otherThermal propertiesen
dc.subject.otherMicroporous materialsen
dc.titleMagnetic silica: epoxy composites with a nano- and micro-scale controlen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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