Fabrication of novel anisotropic magnetic microparticles

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dc.contributor.authorDyab, Amro K. F.
dc.contributor.authorÖzmen, Mustafa
dc.contributor.authorErsöz, Mustafa
dc.contributor.authorPaunov, Vesselin N.
dc.date.accessioned2020-03-26T17:38:41Z
dc.date.available2020-03-26T17:38:41Z
dc.date.issued2009
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractWe report a novel technique for fabrication of magnetically anisotropic microparticles based on "arresting" of the alignment of oleic acid coated magnetite nanoparticles (OCMNs) dispersed within the oil drops of a polymerisable oil-in-water emulsion. This was achieved by polymerising the oil drops after gelling the continuous aqueous phase in the presence of an external magnetic field. This approach allowed us to produce magnetic Janus particles with anisotropic optical and magnetic properties which form unusual zig-zag chains and structures when exposed to an external magnetic field. We studied the magnetic properties of these novel microparticles and showed that they retained remanence magnetisation with high coercivity values indicative of ferromagnetic behaviour. This indicates that the composite polymeric Janus microparticles posses a net magnetic dipole and behave like micromagnets due to the "arrested" orientation of the OCMNs in their polymeric matrix. Utilizing the same technique, magnetic Janus microparticles have been prepared based on emulsions stabilised only by OCMNs without the use of surfactants, and the effect of pH of continuous aqueous phase on the morphology of these microparticles has been investigated.en_US
dc.description.sponsorshipEPSRC (UK)Engineering & Physical Sciences Research Council (EPSRC)en_US
dc.description.sponsorshipThe authors wish to thank the EPSRC (UK) for funding this work. Correspondence and requests for materials should be addressed to V.N.P.en_US
dc.identifier.doi10.1039/b814971men_US
dc.identifier.endpage3481en_US
dc.identifier.issn0959-9428en_US
dc.identifier.issn1364-5501en_US
dc.identifier.issue21en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage3475en_US
dc.identifier.urihttps://dx.doi.org/10.1039/b814971m
dc.identifier.urihttps://hdl.handle.net/20.500.12395/23546
dc.identifier.volume19en_US
dc.identifier.wosWOS:000266269300020en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherROYAL SOC CHEMISTRYen_US
dc.relation.ispartofJOURNAL OF MATERIALS CHEMISTRYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.titleFabrication of novel anisotropic magnetic microparticlesen_US
dc.typeArticleen_US

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