Influence of magnetic interactions in iron oxide nanoparticle polymer composites on magnetism and induction heating

Raczka T, Wolf A, Reichstein J, Stauch C, Schug B, Müssig S, Mandel K (2024)

Publication Type: Journal article, Original article

Publication year: 2024

Journal

Book Volume: 598

Article Number: 172042

DOI: 10.1016/j.jmmm.2024.172042

Open Access Link: https://doi.org/10.1016/j.jmmm.2024.172042

Abstract

Induction heating of composite materials is of great interest in fields such as controlled polymer curing or degradation, self-healing or contactless joining. Ferrimagnetic iron oxide nanoparticle (IONPs) are suitable candidates for a powder additive to provide this inductive heating functionality, while being low-cost, abundant and a well-studied material class. Varying IONP size, morphology or doping facilitates fine-tuning of their heating properties. However, the interactions of such IONP additives in material composites are often neglected and can significantly alter the induction heating mechanism. In this work, we systematically vary the IONP interactions in polydimethylsiloxane composite materials by integrating 1.) dispersed IONPs 2.) supraparticles of IONPs (micrometer-assemblies), and 3.) oven-dried hard agglomerated IONPs. Additionally, these three levels of interaction are investigated for three different IONPs types (dodecahedrally and octahedrally shaped, as well as cobalt-doped). In general, dispersed IONPs reveal a broader hysteresis and therefore a faster heating curve. We highlight that not only IONP characteristics (size, morphology, doping), but also excitation field strength and foremost IONP interactions in the composite materials are parameters that are interdependent regarding induction heating and need to be considered as such for optimization in an application-oriented scenario.

Authors with CRIS profile

Involved external institutions

Fraunhofer Institut für Silicatforschung (ISC) Germany (DE)

How to cite

APA:

Raczka, T., Wolf, A., Reichstein, J., Stauch, C., Schug, B., Müssig, S., & Mandel, K. (2024). Influence of magnetic interactions in iron oxide nanoparticle polymer composites on magnetism and induction heating. Journal of Magnetism and Magnetic Materials, 598. https://doi.org/10.1016/j.jmmm.2024.172042

MLA:

Raczka, Theodor, et al. "Influence of magnetic interactions in iron oxide nanoparticle polymer composites on magnetism and induction heating." Journal of Magnetism and Magnetic Materials 598 (2024).

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