Plasma Activation of Wood Surface by Diffuse Coplanar Surface Barrier Discharge
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Radial cuts of Pedunculate oak (Quercus robur L.) heartwood was activated by Diffuse Coplanar Surface Barrier Discharge (DCSBD) plasma. The plasma treatment resulted in a considerable increase of free surface energy and in the substantial reduction of 50 μl water droplet uptake time. FTIR analysis confirmed the formation of additional polar functional groups on the wood surface due to the plasma treatment. This is consistent with the shift of wood surface pH level towards more acidic values. The energy efficiency of the DCSBD plasma treatment is better comparing to the known volume dielectric barrier discharge treatment method.
KeywordsOak wood Plasma activation Atmospheric pressure plasma DCSBD Coplanar discharge
The research was supported in part by the Slovak Research and Development Agency, Project No. APVT-20-033004 and the Czech Science Foundation, Grant No. 202/05/0777.
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