Počet záznamov: 1
Characterization of the changes of colour and some wood components on the surface of steamed beech wood
SYS 0089329 LBL 00000naa^^22^^^^^^^^450 005 20190401133838.7 017 70
$a 10.17423/afx.2017.59.1.05 $2 DOI 100 $a 20170407d m y0sloc0103 ba 101 0-
$a eng 102 $a SK 200 1-
$a Characterization of the changes of colour and some wood components on the surface of steamed beech wood $f Anton Geffert, Eva Výbohová, Jarmila Geffertová 215 $c obr. 320 $a Lit. 330 $a The aim of this work was to explain the changes in the structure of the main wood components, which cause the colour changes on the surface of the steamed beech wood. The results obtained from the measurement of the surface colourity of the steamed beech wood showed that the steaming under the given conditions had influence on the change of the colourity what was reflected in the change of the total crystallinity index - A1370/A2900 and another important ratios: A1332/A1316, A1370/ A1504 and A1736/ A1640. The obtained results showed that the steaming of beech wood resulted in the colour change of the surface, which was accompanied by the changes in the chemical characteristics of the main components of wood (cellulose, hemicelluloses and lignin). The colour changes of beech wood due to the steaming were the result of the complex chemical changes of the wood components. The steaming under the given conditions caused the partial degradation of hemicelluloses and amorphous cellulose regions and increase in the crystallinity of cellulose. It was accompanied with the concomitant release of lignin-carbohydrate bonds in the surface layers of wood, which was reflected in subsequent removal of the easily degradable polysaccharides and in the relative increase of the lignin content. 463 -1
$1 001 sldk_un_cat*0089217 $1 011 $a 1336-3824 $1 200 1 $a Acta Facultatis Xylologiae Zvolen $e vedecký časopis Drevárskej fakulty $v Roč. 59, č. 1 (2017), s. 49-57 $1 210 $a Zvolen $c Technická univerzita vo Zvolene $d 2017 610 1-
$9 sldk_un_auth*h001468 $a bukové drevo $X beech wood 610 1-
$9 sldk_un_auth*h002809 $a parenie dreva $X steaming of wood 610 1-
$9 sldk_un_auth*h013461 $a farba dreva $X colour of wood 610 1-
$9 sldk_un_auth*h036944 $a spektroskopia ATR $X ATR spectroscopy 610 1-
$9 sldk_un_auth*h017491 $a degradácia polysacharidov $X polysaccharide degradation 610 1-
$9 sldk_un_auth*0040592 $a celkový index kryštalinity $X total crystallinity index $X TCI 675 $a 674.031.632.2 $v 2. stred. $z slo 675 $a 630*81 $v 1. stred. $z slo 675 $a 630*846 $v 1. stred. $z slo 700 -1
$3 sldk_un_auth*p0016647 $a Geffert $b Anton $f 1955- $p TUZDFCHTD $4 070 $T Katedra chémie a chemických technológií 701 -1
$3 sldk_un_auth*p0046221 $a Výbohová $b Eva $f 1974- $p TUZDFCHTD $4 070 $T Katedra chémie a chemických technológií 701 -1
$3 sldk_un_auth*p0039105 $a Geffertová $b Jarmila $f 1956- $p TUZDFCHTD $4 070 $T Katedra chémie a chemických technológií 801 -0
$a SK $b ZV001 $c 20170407 $g AACR2 856 4-
$u https://df.tuzvo.sk/sites/default/files/05-01-17_3_0_0_1_1_0_0_0_0_0_0_0_0.pdf
Počet záznamov: 1