Pine wood treated with a citric acid and glycerol mixture : biomaterial performance improved by a bio-byproduct

Authors: Essoua Essoua, Gatien GéraudBlanchet, PierreLandry, VéronicBeauregard, Robert
Abstract: Wood material is a good reservoir for biogenic carbon storage. The use of wood material for outdoor products such as siding in the building construction sector presents limits. These limits are bound to the nature of wood material (hygroscopic property and anatomical structure). They are responsible for the dimensional variation associated with moisture content variations. Fungal attacks and coating layers adhesion on wood surface, are other problems. This research investigated the feasibility of impregnation with environmentally friendly chemicals, i.e., a citric acid-glycerol mixture (CA-G). The anti-swelling efficiency (ASE), hardness, biodegradation, and coating adhesion tests were performed on softwood specimens. ASE results were up to 53%. The equilibrium moisture content of the treated specimens was less than half of the untreated ones. FTIR spectroscopy showed bands at 1720 to 1750 cm-1, indicating the presence of ester bonds, and scanning electron microscopy images confirmed the polymerization and condensation of treatment solution inside the wood structure. Hardness and decay resistance were increased; however, treatment reduces coating adhesion. In conclusion, CA-G represents a promising eco-responsible solution for improving the technical performance of outdoor wood products.
Document Type: Article de recherche
Issue Date: 17 February 2016
Open Access Date: 24 November 2016
Document version: VoR
This document was published in: BioResources, Vol. 11 (2), 3049–3072 (2016)
Dept. of Wood and Paper Science, College of Natural Resources, North Carolina State University
Alternative version: 10.15376/biores.11.2.3049-3072
Collection:Articles publiés dans des revues avec comité de lecture

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