Preparation of Al2O3 Nanofibers by Thermal Calcination with Low Temperature Plasma Pre-treatment

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Authors

SUROVČÍK Juraj MEDVECKÁ Veronika KOVÁČIK Dušan KELAR TUČEKOVÁ Zlata ROCH Tomáš ZAHORANOVÁ Anna ČERNÁK Mirko

Year of publication 2020
Type Article in Proceedings
Conference NANOCON 2019: 11th International Conference on Nanomaterials - Research & Application
MU Faculty or unit

Faculty of Science

Citation
Web https://doi.org/10.37904/nanocon.2019.8765
Doi http://dx.doi.org/10.37904/nanocon.2019.8765
Keywords Plasma assisted calcination; inorganic fibers; DCSBD; alumina fibers
Description Inorganic submicron fibers (ISF) are nowadays widely studied material. Usually, they are produced by 2-step process. First, the composite metal-organic fibers are produced from polymer matrix and metallic precursor, typically alkoxides or salts by standard spinning techniques. After this, prepared composite fibers are thermally calcinated to remove polymer and form ceramic fibers. In this study, we used low temperature plasma generated at atmospheric pressure using Diffuse Coplanar Surface Barrier Discharge (DCSBD) to eliminate organics from the composite fibers before thermal treatment to reduce the time required for thermal calcination of Al2O3 fibers. This plasma pre-treatment enables using significantly higher heating rates compared to standard calcination without damaging the fiber structure.
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