Heat treatment of poplar plywood: modifications in physical, mechanical and durability properties

doi:10.3832/ifor4159-015

Heat treatment of poplar plywood: modifications in physical, mechanical and durability properties

Bertrand Marcon⁽¹⁾ , Joffrey Viguier⁽¹⁾, Kevin Candelier^(2-3), Marie-France Thevenon^(2-3), Jean-Claude Butaud⁽¹⁾, Luc Pignolet^(2-3), Adélaïde Gartili^(2-3), Louis Denaud⁽¹⁾, Robert Collet⁽¹⁾

iForest - Biogeosciences and Forestry, Volume 16, Issue 1, Pages 1-9 (2023)
doi: https://doi.org/10.3832/ifor4159-015
Published: Jan 09, 2023 - Copyright © 2023 SISEF

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Plywood made of poplar are limited to indoor usages since poplar exhibits a rather low natural durability. Recently, wood heat treatments have been applied to improve properties such as decay susceptibility and dimensional stability. This study examines the potential of exposing poplar plywood to heat treatment to extend the potential of applications of this engineered wood product to outdoor end uses, and new markets accordingly. Plywood panels were glued with two different adhesive formulations based on the same melamine-urea-formaldehyde (MUF) resin to compare their respective ability to resist to the heat treatment. These different plywoods were thermally modified in saturated steam conditions at 215 °C for 2 hours following the ThermoWood^® process, up to reach 14% in mass loss. The durability improvement brought by the heat treatment was assessed in order to evaluate any possible outdoor uses for such plywood. After all the conducted analyses, the potential to use heat treated poplar plywoods in humid interior and protected exterior service conditions was confirmed.

Keywords

Heat Treatment, Plywood, Poplar, Bending Modulus of Elasticity, Bending Strength, Bond Quality, Fungal Durability, Termite Resistance

Authors’ address

(1)

0000-0003-1951-1663
0000-0001-7926-599X

0000-0002-4370-6076
0000-0001-8213-8959
Arts et Metiers Institute of Technology, LaboMaP, UBFC, HESAM, Cluny (France)

(2)

0000-0002-9328-8511
0000-0003-2985-2728

CIRAD, UPR BioWooEB, F-34398 Montpellier (France)

(3)

0000-0002-9328-8511
0000-0003-2985-2728

BioWooEB, Univ Montpellier, CIRAD, Montpellier (France)

Corresponding author

Bertrand Marcon
bertrand.marcon@ensam.eu

Citation

Marcon B, Viguier J, Candelier K, Thevenon M-F, Butaud J-C, Pignolet L, Gartili A, Denaud L, Collet R (2023). Heat treatment of poplar plywood: modifications in physical, mechanical and durability properties. iForest 16: 1-9. - doi: 10.3832/ifor4159-015

Academic Editor

Manuela Romagnoli

Paper history

Received: Jun 16, 2022
Accepted: Nov 07, 2022

First online: Jan 09, 2023
Publication Date: Feb 28, 2023
Publication Time: 2.10 months

Open Access

This article is distributed under the terms of the Creative Commons Attribution-Non Commercial 4.0 International (https://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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