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Structural analysis of heat-treated birch (Betule papyrifera) surface during artificial weathering

Huang Xianai, Kocaefe Duygu, Boluk Yaman et Krause Cornelia. (2013). Structural analysis of heat-treated birch (Betule papyrifera) surface during artificial weathering. Applied Surface Science, 264, p. 117-127.

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URL officielle: https://doi.org/10.1016/j.apsusc.2012.09.137

Résumé

Effect of artificial weathering on the surface structural changes of birch (Betule papyrifera) wood, heattreated to different temperatures, was studied using the fluorescence microscopy and the scanning electron microscopy (SEM). Changes in the chemical structure of wood components were analyzed by FTIR in order to understand the mechanism of degradation taking place due to heat treatment and artificial weathering. The results are compared with those of the untreated (kiln-dried) birch. The SEM analysis results show that the effect of weathering on the cell wall of the untreated birch surface is more than that of heat-treated samples. The FTIR spectroscopy results indicate that lignin is the most sensitive component of heat-treated birch to the weathering degradation process. Elimination of the amorphous and highly crystallised cellulose is observed for both heat-treated and untreated wood during weathering. It is also observed that heat treatment increases the lignin and crystallised cellulose contents, which to some extent protects heat-treated birch against degradation due to weathering.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:264
Pages:p. 117-127
Version évaluée par les pairs:Oui
Date:2013
Sujets:Sciences naturelles et génie > Génie > Génie des matériaux et génie métallurgique
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Mots-clés:Heat-treated wood, artificial weathering, FTIR, wood chemical component, SEM, structural change
Déposé le:21 févr. 2019 22:55
Dernière modification:27 févr. 2019 00:50
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