2017
Development of Al2O3 electrospun fibers prepared by conventional sintering method or plasma assisted surface calcination
MÚDRA, Erika, Magdaléna STREČKOVÁ, David PAVLIŇÁK, Veronika MEDVECKÁ, Dušan KOVÁČIK et. al.Základní údaje
Originální název
Development of Al2O3 electrospun fibers prepared by conventional sintering method or plasma assisted surface calcination
Autoři
MÚDRA, Erika (703 Slovensko), Magdaléna STREČKOVÁ (703 Slovensko), David PAVLIŇÁK (203 Česká republika, domácí), Veronika MEDVECKÁ (703 Slovensko), Dušan KOVÁČIK (703 Slovensko, garant, domácí), Alexandra KOVALČÍKOVÁ (703 Slovensko), Peter ZUBKO (703 Slovensko), Vladimír GIRMAN (703 Slovensko), Zuzana DANKOVÁ (703 Slovensko), Vladimír KOVAL (703 Slovensko) a Jan DUSZA (703 Slovensko)
Vydání
Applied Surface Science, AMSTERDAM, Elsevier Science BV, 2017, 0169-4332
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10305 Fluids and plasma physics
Stát vydavatele
Nizozemské království
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.439
Kód RIV
RIV/00216224:14310/17:00095930
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000402459900017
Klíčová slova česky
elektrospinning;korundová nanovlákna;kalcinace za asistence plazmatu
Klíčová slova anglicky
electrospinning;alumina fibers;plasma assisted surface calcination
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 1. 4. 2018 09:17, Ing. Nicole Zrilić
Anotace
V originále
In this paper, the electrospinning method was used for preparation of aplha-Al2O3 microfibersfrom PAN/Al(NO3)3 precursor solution. The precursor fibers were thermally treated by conventional method in furnace or low-temperature plasma induced surface sintering method in ambient air. The four different temperatures of PAN/Al(NO3)3 precursors were chosen for formation of alpha-Al2O3 phase by conventional sintering way according to the transition features observed in the TG/DSC analysis. In comparison, the low-temperature plasma treatment at atmospheric pressure was used as an alternative sintering method at the exposure times of 5, 10 and 30 minutes. FTIR analysis was used for evaluation of residual polymer after plasma induced calcination and for studying the mechanism of polymer degradation. The polycrystalline alumina fibers arranged with the nanoparticles was created continuously throughout the whole volume of the sample. On the other side the low temperature approach, high density of reactive species and high power density of plasma generated at atmospheric pressure by used plasma source allowed rapid removal of polymer in preference from the surface of fibers leading to the formation of composite ceramic/polymer fibers. This plasma induced sintering of PAN/Al(NO3)3 can have obvious importance in industrial applications where the ceramic character of surface with higher toughness of the fibers are required.
Návaznosti
ED2.1.00/03.0086, projekt VaV |
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LO1411, projekt VaV |
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