Furfural-based resin for modifying birch wood properties

Sharifat Marzieh, Efhamisisi Davood, Thévenon Marie-France, Tarmian Asghar, Jonoobi Mehdi. 2021. Furfural-based resin for modifying birch wood properties. BioResources, 16 (4) : 7139-7160.

Quartile : Q2, Sujet : MATERIALS SCIENCE, PAPER & WOOD

Résumé : Furfural (F) cannot be easily polymerized like furfuryl alcohol, but it is an aldehyde that can react with urea (U) to make a polymeric network. The possibility of preparing F/U polymer along with an acidic catalyzer (maleic anhydride; M) was evaluated as a means to improve some selected properties of birch (Betula pendula) wood. The F+U/M resin was introduced into the wood with a double treatment technology. The first step involved dilution of F in water and methanol, and the second step was immersion in a U/M aqueous solution. The color of treated wood was darkened after resin curing from brown to a spectrum of black depending on the amount of loaded resin. The 60 to 80% of materials were converted to a non-leachable polymer based on the different formulations. The water absorption and volumetric swelling of the treated samples decreased with an increase in weight percent gain (WPG). The analysis of mechanical strength showed that treatment with F + U/M reduced to some extent the hardness and the impact bending of wood, while modulus of rupture, modulus of elasticity, and compression parallel to the grain with WPG were increased. The exposure of the samples to the accelerated weathering showed noticeable changes in color and roughness.

Mots-clés Agrovoc : technologie du bois, propriété du bois, Betula pendula, furfural, urée

Mots-clés libres : Furfural, Urea, Physico-mechanical properties, Weathering, Birch

Classification Agris : K50 - Technologie des produits forestiers

Champ stratégique Cirad : CTS 7 (2019-) - Hors champs stratégiques

Auteurs et affiliations

• Sharifat Marzieh, University of Tehran (IRN)
• Efhamisisi Davood, University of Tehran (IRN) - auteur correspondant
• Thévenon Marie-France, CIRAD-PERSYST-UPR BioWooEB (FRA)
• Tarmian Asghar, University of Tehran (IRN)
• Jonoobi Mehdi, University of Tehran (IRN)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/599081/)

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