Počet záznamov: 1
Modification of maple wood colour during the process of thermal treatment with saturated water steam
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$a 10.17423/afx.2021.63.1.03 $2 DOI 100 $a 20210423a m y0sloy0103 ba 101 0-
$a eng 102 $a SK 200 1-
$a Modification of maple wood colour during the process of thermal treatment with saturated water steam $f Michal Dudiak 215 $c Graf., obr., tab. 320 $a Lit. 330 $a 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. 463 -1
$1 001 sldk_un_cat*0109573 $1 011 $a 1336-3824 $1 200 1 $a Acta Facultatis Xylologiae Zvolen $e vedecký časopis Drevárskej fakulty $v Vol. 63, no. 1 (2021), s. 25-34 $1 210 $a Zvolen $c Technická univerzita vo Zvolene $d 2021 610 1-
$9 sldk_un_auth*h004735 $a javorové drevo $X maple wood 610 1-
$9 sldk_un_auth*h015186 $a modifikácia $X modification 610 1-
$9 sldk_un_auth*h043199 $a farebné zmeny dreva $X colour changes of wood 610 1-
$9 sldk_un_auth*0053773 $a acidita dreva $X wood acidity 610 1-
$9 sldk_un_auth*h011594 $a hustota $X density 610 1-
$9 sldk_un_auth*h030171 $a nasýtené vodné pary $X saturated water steams 675 $a 674.031.746.51 $v 2. stred. $z slo 675 $a 630*812.111 $v 1.stred $z slo 700 -1
$3 sldk_un_auth*0042943 $a Dudiak $b Michal $f 1993- $p TUZDFOD $4 040 $T Katedra obrábania dreva 801 -0
$a SK $b ZV001 $c 20210423 $g AACR2 856 4-
$u https://df.tuzvo.sk/sites/default/files/03-01-21.pdf
Počet záznamov: 1