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Wood Science and Technology

Erschienen in:

01.11.2012 | Original

Changes in wettability of heat-treated wood due to artificial weathering

verfasst von: Xianai Huang, Duygu Kocaefe, Yasar Kocaefe, Yaman Boluk, Andre Pichette

Erschienen in: Wood Science and Technology | Ausgabe 6/2012

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Abstract

Effect of artificial weathering on the wettability of three heat-treated North American wood species (jack pine, aspen, and birch) is studied from the point of view of the structural and chemical changes taking place on the wood surface. Weathering increases wettability of all three heat-treated woods by water. Changes in wettability during artificial weathering differ according to heat treatment procedure and wood species and are likely due to combination of structural and chemical changes of the surfaces. Scanning electron microscopic analysis indicates that cracks form due to degradation taking place during weathering. As a result, water has easier entry into the cell wall, which consequently increases wettability. IR spectra suggest that the OH/CH₂ ratio for heat-treated specimens is inversely proportional to the contact angle regardless of the type of wood species. The presence of cellulose-rich layer on wood surface and increasing amount of amorphous cellulose transformed from crystallized cellulose due to weathering result in increase in hydroxyl; consequently, it increases heat-treated wood wettability.

Vorheriger Artikel Bioavailability and form of copper in wood treated with copper-based preservative

Nächster Artikel Indented rings (hazel growth) of Norway spruce reduce anisotropy of mechanical properties

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Titel: Changes in wettability of heat-treated wood due to artificial weathering
verfasst von: Xianai Huang
Duygu Kocaefe
Yasar Kocaefe
Yaman Boluk
Andre Pichette
Publikationsdatum: 01.11.2012
Verlag: Springer-Verlag
Erschienen in: Wood Science and Technology / Ausgabe 6/2012
Print ISSN: 0043-7719
Elektronische ISSN: 1432-5225
DOI: https://doi.org/10.1007/s00226-012-0479-6

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