Kúdela, Jozef, 1954- Surface properties of beech wood modified by CO2 laser / Jozef Kúdela ... [et al.]. -- Obr., tab. -- Lit. - The paper is focusedon the analysis of surface properties of beech wood modified by the CO2 laser. Colour and morphological changes inthe beech wood surface subjected to laser treatment under different irradiation doseswere monitored. Experiments were carried out toinvestigatethe wetting surfaces treated with standard liquids. Free surface energy values were also determined for these surfaces. The results showed that increasing the irradiation dose over a range of 0-75 J∙cm-² induced a significant increase in the total colour difference (DE*= 45).This discolouration was caused by a significant decrease in brightness L* from 73 to 30 and also by the decreased colour coordinates a*a b*. Significant morphological changes were not detected except at the highest irradiation dosewith the entire surface layer being carbonised and the surface roughness increased.Anincreasein irradiation dosesresulted in a decrease inthe surface free energy values of beech wood. However, the wood surface modified this waystill complied with the requirements for surface treatment with coating materials and for gluing.

In Acta Facultatis Xylologiae Zvolen : vedecký časopis Drevárskej fakulty. -- Zvolen : Technická univerzita vo Zvolene, 2019. -- ISSN 1336-3824. -- Vol. 61, no. 1 (2019), s. 5-18

I. Reinprecht, Ladislav, 1953-
II. Tiralová, Zuzana, 1975-
III. Andrejko, Michal, 1992-
IV. Acta Facultatis Xylologiae Zvolen : vedecký časopis Drevárskej fakulty. -- Vol. 61, no. 1 (2019), s. 5-18

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