Chemical Modification of Wood by Polyglycerol/Maleic Anhydride Treatment

Roussel, Christophe; Marchetti, V.; Lemor, A.; Woźniak, Edyta; Loubinoux, B.; Gérardin, Philippe

doi:10.1515/hf.2001.009

Cited by 28 publications

(9 citation statements)

References 8 publications

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“…The anti-swelling efficiency (ASE-a) of this treatment was around 35% to 45%. ASE-a results obtained after wood treatment with maleic anhydride and glycerol or maleic anhydride only were also less than those obtained in this section, at approximately 48% (Roussel et al 2001;Essoua Essoua et al 2015).…”

Section: Swelling (α) Shrinkage (β) and Anti-swelling Efficiency Ancontrasting

confidence: 74%

Pine Wood Treated with a Citric Acid and Glycerol Mixture: Biomaterial Performance Improved by a Bio-byproduct

et al. 2016

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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 acidglycerol 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.

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Section: Swelling (α) Shrinkage (β) and Anti-swelling Efficiency Ancontrasting

confidence: 74%

Pine Wood Treated with a Citric Acid and Glycerol Mixture: Biomaterial Performance Improved by a Bio-byproduct

et al. 2016

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“…Maleic anhydride/polyglycerol adducts (MA/PG) and polyglycerol methacrylate (PGMA) were synthesized according to previously published procedures (Roussel et al 2001, Soulounganga et al 2003.…”

Section: Synthesis Of Additivesmentioning

confidence: 99%

Improvement of the durability of heat-treated wood against termites

Salman¹,

Thevenon²,

Pétrissans³

et al. 2017

Maderas, Cienc. tecnol.

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Thermal modification is an attractive alternative to improve the decay durability and dimensional stability of wood. However, thermally modified wood is generally not resistant to termite attacks, limiting the field of application of such materials. One way to overcome this drawback is to combine thermal modification treatment with an additional treatment. One such treatment is the impregnation of a boron derivative associated with appropriate vinylic monomers, which takes advantage of the thermal treatment to polymerise these monomers for boron fixation. Using this strategy, we recently showed that an impregnation of borax (2 or 4% boric acid equivalent) dissolved in a 10% aqueous solution of polyglycerolmethacrylate followed by thermal treatment under nitrogen at 220°C protects wood from both termite and decay degradations, even after leaching. Additionally, wood samples treated with a 10% polyglycerolmethacrylate aqueous solution and subjected to thermal treatment at 220°C presented improved resistance to termites while avoiding boron utilization. Based on these results, we investigate the effect of impregnation with two types of vinylic monomers, which are already used in the presence of boron, followed by thermal treatments at different temperatures. We evaluate termite and decay durability of wood to evaluate if thermal modification associated with light chemical modification could be a solution for utilization of thermally modified materials in termite-infested areas. (Résumé d'auteur

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“…Although acetic anhydride, melamine formaldehyde, sorbitol, and N-methylol melamine have been reported to modify the cell wall for durability improvement in a similar strategy to our work, several drawbacks like the strong acid catalysts employed or formaldehyde release adversely affect their properties and the environment, and thus limit their practical applications [39][40][41][42][43]. Although maleic anhydride was reported to bulk the cell wall and chemically bond to the hydroxyl group, the employed methods still use solvents like DMSO, which are difficult to remove after the reaction, and the vapor phase reaction requires specific equipment [44][45][46]. This study avoids the above limitations by using acetone as a solvent, with the benefits of easy bulking of the cell wall, easy removal after reaction, and lack of a requirement for specific equipment.…”

Section: Introductionmentioning

confidence: 99%

Cell Wall Bulking by Maleic Anhydride for Wood Durability Improvement

et al. 2020

Forests

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Wood is susceptible to swelling deformation and decay fungi due to moisture adsorption that originates from the dynamic nanopores of the cell wall and the abundant hydroxyl groups in wood components. This study employed as a modifier maleic anhydride (MAn), with the help of acetone as solvent, to diffuse into the wood cell wall, bulk nanopores, and further chemically bond to the hydroxyl groups of wood components, reducing the numbers of free hydroxyl groups and weakening the diffusion of water molecules into the wood cell wall. The derived MAn-bulked wood, compared to the control wood, presented a reduction in water absorptivity (RWA) of ~23% as well as an anti-swelling efficiency (ASE) of ~39% after immersion in water for 228 h, and showed an improvement in decay resistance of 81.42% against white-rot fungus and 69.79% against brown-rot fungus, respectively. The method of combined cell wall bulking and hydroxyl group bonding could effectively improve the dimensional stability and decay resistance with lower doses of modifier, providing a new strategy for wood durability improvement.

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Chemical Modification of Wood by Polyglycerol/Maleic Anhydride Treatment

Cited by 28 publications

References 8 publications

Pine Wood Treated with a Citric Acid and Glycerol Mixture: Biomaterial Performance Improved by a Bio-byproduct

Pine Wood Treated with a Citric Acid and Glycerol Mixture: Biomaterial Performance Improved by a Bio-byproduct

Improvement of the durability of heat-treated wood against termites

Cell Wall Bulking by Maleic Anhydride for Wood Durability Improvement

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