Počet záznamov: 1
Characterization of the changes of colour and some wood components on the surface of steamed beech wood
Názov Characterization of the changes of colour and some wood components on the surface of steamed beech wood Aut.údaje Anton Geffert, Eva Výbohová, Jarmila Geffertová Autor Geffert Anton TUZDFCHTD - Katedra chémie a chemických technológií Spoluautori Výbohová Eva TUZDFCHTD - Katedra chémie a chemických technológií Geffertová Jarmila TUZDFCHTD - Katedra chémie a chemických technológií Zdroj.dok. Acta Facultatis Xylologiae Zvolen : vedecký časopis Drevárskej fakulty. Roč. 59, č. 1 (2017), s. 49-57. - Zvolen : Technická univerzita vo Zvolene, 2017 Poznámky Lit. Jazyk dok. angličtina Krajina Slovenská republika Systematika 674.031.632.2 630*81 630*846 Heslá bukové drevo - beech wood * parenie dreva - steaming of wood * farba dreva - colour of wood * spektroskopia ATR - ATR spectroscopy * degradácia polysacharidov - polysaccharide degradation * celkový index kryštalinity - total crystallinity index TCI Anotácia 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. URL https://df.tuzvo.sk/sites/default/files/05-01-17_3_0_0_1_1_0_0_0_0_0_0_0_0.pdf Kategória publikačnej činnosti ADN Báza dát xcla - ČLÁNKY Druh dok. RBX - rozpis článkov z periodík Odkazy PERIODIKÁ-Súborný záznam periodika Zväzky 2017: 1-2 
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Počet záznamov: 1