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Erschienen in: Wood Science and Technology 4/2020

22.05.2020 | Original

Coating cork particles with iron oxide: effect on magnetic properties

verfasst von: J. Abenojar, S. López de Armentia, A. Q. Barbosa, M. A. Martínez, F. Velasco, L. F. M. da Silva, J. C. del Real Romero

Erschienen in: Wood Science and Technology | Ausgabe 4/2020

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Abstract

The main objective of this research is to develop a technique to obtain magnetic cork particles. The magnetization is achieved by applying a coating of iron oxides, obtained directly on the surface of cork particles from an acid solution of Fe cations added to a basic solution containing the particles. Previous surface treatment of cork particles was required; hence, plasma pretreatment was applied in a vacuum chamber to clean and activate the surface, enabling the coating process. Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, density and particle size were applied to characterize the cork and magnetic cork particles. In parallel, the magnetic character of particles was tested using magnets and by hysteresis cycles. All techniques have shown the presence of magnetite and maghemite on the cork surface. Results show cork particles adsorb between 17 and 27% of magnetite and maghemite, since by this process a mixture of both was obtained. These results are in accordance with density measurements. The magnetizing process is patented under Patent Numbers P201730993 and PCT/ES2018/070519.

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Literatur
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Zurück zum Zitat da Silva CI, Barbosa AQ, Marques JB, Carbas RJC, Marques EAS, Abenojar J, da Silva LFM (2020) Mechanical characterisation of graded single lap joints using magnetised cork microparticles. In: da Silva L, Martins P, El-Zein M (eds) Advanced joining processes in advanced structured materials, vol 125. Springer, Singapore, pp 153–174. https://doi.org/10.1007/978-981-15-2957-3_11 CrossRef da Silva CI, Barbosa AQ, Marques JB, Carbas RJC, Marques EAS, Abenojar J, da Silva LFM (2020) Mechanical characterisation of graded single lap joints using magnetised cork microparticles. In: da Silva L, Martins P, El-Zein M (eds) Advanced joining processes in advanced structured materials, vol 125. Springer, Singapore, pp 153–174. https://​doi.​org/​10.​1007/​978-981-15-2957-3_​11 CrossRef
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Metadaten
Titel
Coating cork particles with iron oxide: effect on magnetic properties
verfasst von
J. Abenojar
S. López de Armentia
A. Q. Barbosa
M. A. Martínez
F. Velasco
L. F. M. da Silva
J. C. del Real Romero
Publikationsdatum
22.05.2020
Verlag
Springer Berlin Heidelberg
Erschienen in
Wood Science and Technology / Ausgabe 4/2020
Print ISSN: 0043-7719
Elektronische ISSN: 1432-5225
DOI
https://doi.org/10.1007/s00226-020-01191-4

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