Interplay between thermal and magnetic properties of polymer nanocomposites with superparamagnetic Fe3O4 nanoparticles

Simple item page
dc.contributor.authorRezoanur Rahman, Men_AU
dc.contributor.authorBake, Aen_AU
dc.contributor.authorJumlat Ahmed, AIen_AU
dc.contributor.authorIslam, SMKNen_AU
dc.contributor.authorWu, Len_AU
dc.contributor.authorKhakbaz, HSen_AU
dc.contributor.authorFitzGerald, Sen_AU
dc.contributor.authorChalifour, Aen_AU
dc.contributor.authorLivesey, KLen_AU
dc.contributor.authorKnott, JCen_AU
dc.contributor.authorInnis, PCen_AU
dc.contributor.authorBeirne, Sen_AU
dc.contributor.authorCortie, DLen_AU
dc.date.accessioned2024-10-03T05:39:41Zen_AU
dc.date.available2024-10-03T05:39:41Zen_AU
dc.date.issued2023-08-01en_AU
dc.date.statistics2024-09-24en_AU
dc.description.abstractMagnetic nanoparticles embedded in polymer matrices have excellent potential for multifunctional applications like magnetic remote heating, controlled drug delivery, hyperthermia, and thermally functionalized biomedical devices. A solvent-based processing method was developed to produce magnetic composites consisting of magnetite (Fe3O4) superparamagnetic nanoparticles embedded in a biomedical-grade polyurethane (ChronoFlex® C). The particles had a log-normal size distribution spanning from 4−16 nm, with a mean-size of 9.5 ± 2 nm. X-ray diffraction, transmission electron microscopy, and scanning electron microscopy with elemental mapping were used to assess the phase purity, surface morphology, particle size, and homogeneity of the resulting nanocomposite. The magnetic properties of composites with 7–13 wt% of Fe3O4 were studied between 5 and 300 K using vibrating sample magnetometry. Room temperature magnetic attraction was observed, with a saturation magnetization of up to 5 emu/g and a low coercive field (Hc < 50 Oe), where the non-zero coercive field was attributed to a small fraction of larger particles that are ferromagnetic at room temperature. Field-cooled and zero-field-cooled magnetometry data were fitted to a numerical model to determine the superparamagnetic mean blocking temperature (TB = 90 K) of the embedded magnetite particles, and an effective magnetic anisotropy of 6×105 erg/cm3. Using an AC magnetic field operating at 85 kHz, we demonstrate that remote heating of the base polyurethane material is greatly enhanced by compositing with Fe3O4 nanoparticles, leading to temperatures up to 45 °C within 18 min for composites submerged in water. This work demonstrates the fundamental principles of a custom-designed thermomagnetic polymer composite that could be used in applications, including medical and heat management. © 2023 Published by Elsevier B.V.en_AU
dc.description.sponsorshipThe authors acknowledge support from the Australian Institute for Innovative Materials (University of Wollongong) AIIM4Gold Funding Scheme. SF acknowledges support from NSF DMR-1808426. AC and KL acknowledge funding from NSF DMR-1808412. PI, LW and HK acknowledge funding from the Australian Research Council (ARC) Centre of Excellence for Electromaterials Science (CE140100012) and ARC Discovery Project (DP170102572). This work was supported in part at the Materials Node of the Australian National Fabrication Facility under the National Collaborative Research Infrastructure Strategy.en_AU
dc.identifier.articlenumber170859en_AU
dc.identifier.citationRezoanur Rahman, M., Bake, A., Jumlat Ahmed, A., Md Kazi Nazrul Islam, S., Wu, L., Khakbaz, H., FitzGerald, S., Chalifour, A., Livesey, K. L., Knott, J. C., Innis, P. C., Beirne, S., & Cortie, D. (2023). Interplay between thermal and magnetic properties of polymer nanocomposites with superparamagnetic Fe3O4 nanoparticles. Journal of Magnetism and Magnetic Materials, 579, 170859. doi: 10.1016/j.jmmm.2023.170859en_AU
dc.identifier.issn0304-8853en_AU
dc.identifier.journaltitleJournal of Magnetism and Magnetic Materialsen_AU
dc.identifier.urihttps://doi.org/https://doi.org/10.1016/j.jmmm.2023.170859en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15701en_AU
dc.identifier.volume579en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectMagnetic propertiesen_AU
dc.subjectNanoparticlesen_AU
dc.subjectIron oxidesen_AU
dc.subjectHyperthermiaen_AU
dc.subjectPlasticsen_AU
dc.subjectHeatingen_AU
dc.subjectPolymersen_AU
dc.titleInterplay between thermal and magnetic properties of polymer nanocomposites with superparamagnetic Fe3O4 nanoparticlesen_AU
dc.typeJournal Articleen_AU
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.66 KB
Format:
Plain Text
Description:
Download
Collections
Journal Articles