Dudiak, Michal, 1993- Modification of maple wood colour during the process of thermal treatment with saturated water steam / Michal Dudiak. -- Graf., obr., tab. -- Lit. - The technological process of colour modification and the associated parallel processes of changing the acidity and density of maple wood modified in pressure autoclave with saturated water steam is evaluated in the paper. Maple wood was thermally treatment at the temperatures of: tI = 105 ± 2.5 °C, tII = 125 ± 2.5 °C and tIII = 135 ± 2.5 °C for τ = 3, 6, 9 and 12 hours. Direct pH measurement of maple wood with the moisture content above the fiber saturation point (FSP) was performed using SI 600 pH meter with LanceFET + H puncture probe. The acidity values of maple wood ranged from pH = 5.1 in the case of native wood, and the acidity of the wood changed to pH = 3.3 due to the temperature and time of modification. The density of maple wood was determined using the RADWAG KIT 128 instruments. The total change in the density of wood during the modification process was 5.3 % lower than the density of native wood. Statistical evaluation of the measured results showed the correlations between the total colour difference and pH.

In Acta Facultatis Xylologiae Zvolen : vedecký časopis Drevárskej fakulty. -- Zvolen : Technická univerzita vo Zvolene, 2021. -- ISSN 1336-3824. -- Vol. 63, no. 1 (2021), s. 25-34

I. Acta Facultatis Xylologiae Zvolen : vedecký časopis Drevárskej fakulty. -- Vol. 63, no. 1 (2021), s. 25-34

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