Effect of DCSBD plasma treatment distance on surface characteristics of wood and thermally modified wood

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Publikace nespadá pod Pedagogickou fakultu, ale pod Přírodovědeckou fakultu. Oficiální stránka publikace je na webu muni.cz.
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TALVISTE Rasmus GALMIZ Oleksandr STUPAVSKÁ Monika RÁHEĽ Jozef

Rok publikování 2020
Druh Článek v odborném periodiku
Časopis / Zdroj Wood Science and Technology
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
www https://rdcu.be/b3tLw
Doi http://dx.doi.org/10.1007/s00226-020-01175-4
Klíčová slova wood; plasma; DCSBD
Popis This study focused on plasma treatment of European beech (Fagus sylvatica) and heat-treated European beech surfaces with varying distance from the planar electrode of the diffuse coplanar surface barrier discharge. In addition to the treatment in the air, plasma treatment was also carried out in O2, CO2, N2 and Ar atmospheres. Treatment was differentiated between treatment in the active plasma zone and in the so-called plasma afterglow region. Air plasma treatment in the active plasma zone led to the well-known improvement of surface wettability of polar liquids due to increased polar part of surface free energy. Treatment in plasma afterglow region caused the wettability decline of polar liquids and caused a more hydrophobic surface. The phenomenon was primarily present for air plasma treatment. Oxygento-carbon ratio measured by X-ray photoelectron spectroscopy did not change with the treatment in air plasma afterglow. Based on additional tests with pure cellulose paper and based on findings in previous studies, the reason for increased hydrophobicity was suggested to be degradation of hemicelluloses on the wood surface.
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