Abstract
Beech wood has been treated by impregnation followed by heating at various temperatures with solutions containing citric acid (CA) or tartaric acid (TA) alone or in combination with glycerol (G), i.e. with G+CA and G+TA. The resulting modified woods were tested in terms of resistance to leaching, durability and dimensional stability. These properties are improved as a function of heating temperature, which leads to higher levels of poly-esterification involving grafting onto wood simultaneously with thermal degradation of wood. Dimensional stability of all treated wood was increased, but glycerol does not have a positive effect with this regard. Attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy contributed to understanding the effects of the different treatments. In situ polymerization of G+TA at 140°C increased the bending resistance, while G+CA polymerization does not compensate notably the mechanical weakness induced by thermal degradation of wood at higher temperatures. However, G+CA treatment is more efficient regarding leaching and decay resistance, than that with G+TA.
Acknowledgment
The research leading to these results was supported by funding from the WoodWisdom-Net Research Program, which is a transnational R&D program jointly funded by national funding organizations within the framework of the ERA-NET+ Action WoodWisdom-Net+. LERMaB is supported by a grant overseen by the French National Research Agency (ANR) as part of the “Investissements d’Avenir” program (ANR-11-LABX-0002-01, Lab of Excellence ARBRE).
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Employment or leadership: None declared.
Honorarium: None declared.
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©2018 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Original Articles
- A novel norneolignan glycoside and four new phenolic glycosides from the stems of Viburnum fordiae Hance
- Generation of lignin polymer models via dehydrogenative polymerization of coniferyl alcohol and syringyl alcohol via several plant peroxidases involved in lignification and analysis of the resulting DHPs by MALDI-TOF analysis
- Simple production of medium density fiberboards (MDF) reinforced with chitosan
- Scrimber board (SB) manufacturing by a new method and characterization of SB’s mechanical properties and dimensional stability
- Improvement of beech wood properties by in situ formation of polyesters of citric and tartaric acid in combination with glycerol
- Effect of the penetration of isocyanates (pMDI) on the nanomechanics of wood cell wall evaluated by AFM-IR and nanoindentation (NI)
- Characteristics of wood-silica composites influenced by the pH value of silica sols
- Dependence of Poisson’s ratio and Young’s modulus on microfibril angle (MFA) in wood
- The influence of bamboo fiber content on the non-isothermal crystallization kinetics of bamboo fiber-reinforced polypropylene composites (BPCs)
- Complete plastid genome sequences of three tropical Alseodaphne trees in the family Lauraceae
Articles in the same Issue
- Frontmatter
- Original Articles
- A novel norneolignan glycoside and four new phenolic glycosides from the stems of Viburnum fordiae Hance
- Generation of lignin polymer models via dehydrogenative polymerization of coniferyl alcohol and syringyl alcohol via several plant peroxidases involved in lignification and analysis of the resulting DHPs by MALDI-TOF analysis
- Simple production of medium density fiberboards (MDF) reinforced with chitosan
- Scrimber board (SB) manufacturing by a new method and characterization of SB’s mechanical properties and dimensional stability
- Improvement of beech wood properties by in situ formation of polyesters of citric and tartaric acid in combination with glycerol
- Effect of the penetration of isocyanates (pMDI) on the nanomechanics of wood cell wall evaluated by AFM-IR and nanoindentation (NI)
- Characteristics of wood-silica composites influenced by the pH value of silica sols
- Dependence of Poisson’s ratio and Young’s modulus on microfibril angle (MFA) in wood
- The influence of bamboo fiber content on the non-isothermal crystallization kinetics of bamboo fiber-reinforced polypropylene composites (BPCs)
- Complete plastid genome sequences of three tropical Alseodaphne trees in the family Lauraceae