Investigation of the plasma effects on wood after activation by diffuse coplanar surface barrier discharge

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Authors

LUX Christian SZALAY Zsolt BEIKIRCHER Wilfried KOVÁČIK Dušan PULKER Hans K.

Year of publication 2013
Type Article in Periodical
Magazine / Source European Journal of Wood and Wood Products
MU Faculty or unit

Faculty of Science

Citation
Web http://download.springer.com/static/pdf/456/art%253A10.1007%252Fs00107-013-0706-3.pdf?auth66=1389446376_aa09eb1b3c9f06f44a39beba7eb23674&ext=.pdf
Doi http://dx.doi.org/10.1007/s00107-013-0706-3
Field Forestry
Keywords ATMOSPHERIC-PRESSURE; WATER-ABSORPTION; AIR; WETTABILITY; ADHESION; DBD
Description Abstract Sample material from spruce (Picea abies), beech (Fagus sylvatica) and ash (Fraxinus excelsior) with radial and tangential section was treated by diffuse coplanar surface barrier discharge (DCSBD) plasma generated in air at atmospheric pressure. Plasma activated samples exhibited significantly lower water uptake times of 50 mu l droplets and minimal differences in wetting between the two cutting planes (radial and tangential), when compared to the untreated surface. Simultaneously, more uniform spreading of the droplets and increased area of wetting on the activated surface were achieved. The plasma treatment had no effect on the water absorption coefficient of the wood samples. FTIR measurements confirmed the presence of oxygen containing functional groups and structural changes in lignin on the activated wood surface. The minimal heating of the treated samples suggests this method to be applicable to treat heat sensitive wooden materials.
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