Investigations on wood treatment by eco-friendly hydroxypolyurethanes

Abstract : Dimensional stabilisation is a crucial property for using wood in most applications. Therefore an isocyanate-free route is proposed, based on the reaction of various diamines with dicarbonates obtained by addition of two glycerol carbonates moieties on a linker. For the initial experiments, the mildest conditions to perform the reaction are researched with model mono- and polyamines without wood: solvent, temperature, number of equivalent and regioselectivity were investigated. Subsequently, beech wood blocks were impregnated by a double vacuum process involving cyclic carbonates and then polyamines. The key step was a polycondensation performed in the beech blocks after the monomers had been impregnated. Resistance of treatment to leaching, anti-swelling efficiency and decay durability versus Poria placenta were evaluated. Results were promising with ASE values of about 70% for a weight gain of approximately 30% after leaching. Biological tests indicated also an improvement of resistance to fungal decay of beech wood.
Type de document :
Article dans une revue
International wood products journal, Maney Publishing, 2015, 6 (1), pp.31 - 35. 〈10.1179/2042645314Y.0000000088〉
Liste complète des métadonnées

https://hal.univ-lorraine.fr/hal-01597990
Contributeur : Lermab Ul <>
Soumis le : vendredi 29 septembre 2017 - 09:51:06
Dernière modification le : jeudi 12 avril 2018 - 15:14:03

Identifiants

Collections

Citation

S. Dumarçay, K. Iaych, A. Lemor, P. Gerardin. Investigations on wood treatment by eco-friendly hydroxypolyurethanes. International wood products journal, Maney Publishing, 2015, 6 (1), pp.31 - 35. 〈10.1179/2042645314Y.0000000088〉. 〈hal-01597990〉

Partager

Métriques

Consultations de la notice

23