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Study of weathering behavior of jack pine heat-treated under different conditions

Kocaefe Duygu, Huang Xianai, Kocaefe Yasar S. et Boluk Yaman. (2013). Study of weathering behavior of jack pine heat-treated under different conditions. Journal of Energy and Power Engineering, 7, p. 818-826.

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Résumé

It is of considerable importance to investigate the influence of weathering on the degradation processes of heat-treated wood. Kiln-dried (untreated) jack pine (Pinus banksiana) and jack pine heat-treated at three different temperatures (190°C, 200°C, and 210°C) were exposed to artificial weathering for different periods in order to understand the degradation processes due to weathering. Before and after exposure, their color and wettability by water were determined. Structural changes and chemical modifications at exposed surfaces were also investigated using SEM, FTIR spectroscopy, and XPS. The results revealed that the photo-degradation of lignin and the presence of extractives play important roles in color change and wetting behavior of heat-treated wood surfaces during weathering. The structural changes also influence the wettability. The effects of weathering for woods heat-treated under different conditions were similar, but different from those for untreated wood.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:7
Pages:p. 818-826
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, weathering, jack pine, color change, wetting, SEM, FTIR, XPS
Déposé le:18 avr. 2019 20:59
Dernière modification:18 avr. 2019 20:59
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