Preparation and characterization of alumina submicron fibers by plasma assisted calcination

0536709 - FZÚ 2021 RIV GB eng J - Journal Article
Medvecká, V. - Kováčik, D. - Stupavská, M. - Roch, T. - Kromka, Alexander - Fajgar, Radek - Zahoranová, A. - Černák, M.
Preparation and characterization of alumina submicron fibers by plasma assisted calcination.
Ceramics International. Roč. 46, č. 14 (2020), s. 22774-22780. ISSN 0272-8842. E-ISSN 1873-3956
R&D Projects: GA MŠMT LM2018110
Institutional support: RVO:68378271 ; RVO:67985858
Keywords : Al₂O₃ submicron fibres * plasma-assisted calcination * coplanar discharge * dielectric barrier discharge * atmospheric pressure plasma
OECD category: Materials engineering; Materials engineering (UCHP-M)
Impact factor: 4.527, year: 2020
Method of publishing: Open access with time embargo
https://doi.org/10.1016/j.ceramint.2020.06.044

Ceramic alumina nanofibers were prepared by plasma-assisted calcination (PAC) using atmospheric pressure plasma. Electrospun polyvinyl pyrrolidone/aluminium butoxide fibers were pre-treated by plasma generated in ambient air using a special type of coplanar dielectric barrier discharge. The effect of plasma on fibers and structural, chemical and crystalline properties of obtained ceramic nanofibers were characterized using XPS and SEM, EDX and XRD. Thermogravimetric and differential thermal analysis were used for the study of thermal behaviour of untreated and plasma-treated samples. The ceramic fibers prepared by PAC exhibit suitable chemical composition, higher porosity, high length of fibers and better crystalline properties with simultaneous simplifying of the sintering process.
Permanent Link: http://hdl.handle.net/11104/0314435