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Effect of surface preparation on the wettability of heat-treated jack pine wood surface by different liquids

Huang Xianai, Kocaefe Duygu, Boluk Yaman, Kocaefe Yasar S. et Pichette André. (2012). Effect of surface preparation on the wettability of heat-treated jack pine wood surface by different liquids. European Journal of Wood and Wood Products, 70, (5), p. 711-717.

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URL officielle: http://dx.doi.org/doi:10.1007/s00107-012-0605-z

Résumé

The objectives of this study are to quantitatively evaluate, using a wetting model, the wettability of three probe liquids with different properties on heat-treated jack pine surfaces prepared by three different types of machining (sanding, planing and sawing) and to compare with those of untreated wood surfaces. The results indicate that the heat-treated wood is wetted less than the untreated wood due to degradation of wood components (hemicelluloses, lignin and cellulose) during heat treatment and it absorbs less liquid. The heat-treated wood becomes most hydrophobic when wood surfaces are sanded by 180-grit paper compared to those prepared by other machining process. Heat-treated wood surfaces are strongly acidic similar to those of untreated wood. Consequently, the basic probe liquid, formamide, shows the highest spreading and penetration rate (K-value) on wood surfaces.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:70
Numéro:5
Pages:p. 711-717
Version évaluée par les pairs:Oui
Date:Septembre 2012
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:Contact angle, dynamic wetting, heat treatment wood, K-value, liquid, sanding, surface preparation, wood surface, penetration rate, dynamic contact angle, untreated wood
Déposé le:13 mars 2019 23:54
Dernière modification:13 mars 2019 23:54
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