Photodegradation stability of huminated European pine (Pinus sylvestris L.) microveneers

Abstract: Humins are heterogeneous and polydisperse furanic macromolecules derived from sugar biorefinery. Improving wood properties by humination has become of interest recently. This study examined the photodegradation stability of European pine sapwood microveneers modified with humins at different concentrations of citric acid (CA) and succinic acid (SA) as reaction catalysts, e.g., 1.5 %, 3 %, and 4.5 % wt.%. The photostability of huminated wood was assessed after 48 h, 96 h, and 144 h of exposure to the accelerated weathering test by means of mass loss and finite-span tensile strength. The results were compared with unmodified and also unweathered samples. The FT-IR spectroscopy showed apparent changes in the chemical structure of wood by humination modifications. The weight percentage gains of the samples increased with increasing the concentration of the catalyst. While no differences were observed between the samples after two weeks of the water leaching. The strength losses of weathered microveneers were, however, mostly reduced by humin-based formulas containing catalysts, where the microveneers modified with 1.5 % and 3 % CA showed respectively 32 % and 41 % lower strength loss values than the unmodified samples after 144 h of weathering. Overall, the results showed a high potential for humins to protect wood against photodegradation.

Angaben zum Objekt

• Standort: Deutsche Nationalbibliothek Frankfurt am Main
• Umfang: Online-Ressource
• Sprache: Englisch

Verweise und Beziehungen

• Erschienen in: Photodegradation stability of huminated European pine (Pinus sylvestris L.) microveneers ; volume:78 ; number:5 ; year:2024 ; pages:283-292 ; extent:10 ; Holzforschung ; 78, Heft 5 (2024), 283-292 (gesamt 10)

Beteiligte, Orts- und Zeitangaben

• Urheber: Ghavidel, Amir ; Hosseinpourpia, Reza

Weitere Informationen

• DOI: 10.1515/hf-2024-0006
• URN: urn:nbn:de:101:1-2405081724309.467986525581
• Rechteinformation: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Letzte Aktualisierung: 14.08.2025, 10:59 MESZ