1. STUDY OF WOOD SURFACE PRE-TREATMENT BY RADIO-FREQUENCY DISCHARGE PLASMA.
- Author
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NOVÁK, Igor, SEDLIAČIK, Ján, KRYSTOFIAK, Tomasz, LIS, Barbara, POPELKA, Anton, KLEINOVÁ, Angela, MATYAŠOVSKÝ, Ján, JURKOVIČ, Peter, and BEKHTA, Pavlo
- Subjects
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PLASMA flow , *BEECH , *DURMAST oak , *MAPLE , *EUROPEAN beech , *CONTACT angle , *WOOD - Abstract
An investigation was made of wood of the species oak (Quercus petraea), beech (Fagus sylvatica L.), maple (Acer pseudoplatanus) and ash (Fraxinus excelsior) pre-treated using radio-frequency (RF) plasma in air at reduced pressure. Physical and chemical changes for all of the wood species were determined using measurements of water contact angles and FTIR-ATR spectroscopy. The results confirmed an increase in the wood’s hydrophilicity/polarity in all cases, caused by an increase in –OH group concentration due to irradiation by RF plasma. The content of oxygen-containing functional groups after treatment by RF plasma significantly increased, and the water contact angles were diminished. FTIR-ATR spectroscopy confirmed that RF plasma modification of the surfaces of all investigated wood samples led to certain changes, which were also dependent on the time of plasma exposure. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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