Abstract
Wood properties of furfurylation can be altered by reaction mechanisms of furfuryl alcohol polymer (PFA) and cell walls. Although chemical reactions between PFA and lignin have been studied, reaction mechanisms between PFA and cell wall components, including lignin, cellulose and hemicellulose are still not comprehensively understood. In order to elucidate chemical reactions regarding PFA with wood cell walls, model compounds of main cell wall components were used to investigate its reactions with PFA by 13C NMR spectroscopy and differential scanning calorimetry (DSC). Results showed that there was no chemical bonding of PFA with either cellulose or hemicellulose. Condensations of uncrowded ring positions (meta, ortho and para) and side chains (α–C, β–C, β–OH, and γ–OH) of lignin with PFA did occur based on 13C NMR spectra. Reaction enthalpy and activation energy also confirmed the condensation reactions between lignin and PFA. This study could provide design guidelines to control the chemical reactions of PFA in cell walls and lignin and, therefore, improve the properties of furfurylated wood.
Funding source: National Key Research and Development Program of China
Award Identifier / Grant number: 2017YFD0600202
Funding source: National Key Research and Development Program of China
Award Identifier / Grant number: 2017YFD0600203
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Author contributions: X. S. and S. Y. designed the experiment. X. S. and P. J. performed experiments and analyzed data. All authors contributed to the writing and review of manuscript. All authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: This work was financially supported by the National Key Research and Development Program of China (2017YFD0600202) and National Key Research and Development Program of China (2017YFD0600203).
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Supplementary Material
The online version of this article offers supplementary material (https://doi.org/10.1515/hf-2020-0271).
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Articles in the same Issue
- Frontmatter
- Original Articles
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Articles in the same Issue
- Frontmatter
- Original Articles
- Near-infrared spectroscopy and hyperspectral imaging can aid in the prediction and mapping of polyploid acacia hybrid wood properties in tree improvement programs
- Monitoring imbibition dynamics at tissue level in Norway spruce using X-ray imaging
- Influence of the applied pressure of the transducer on the propagation speed of the ultrasonic wave in wood
- Prediction of shear strength parallel to grain in clear wood of oak (Quercus robur L.) on the basis of shear plane orientation, density and anatomical traits
- Sound absorption characteristics of three species (binuang, balsa and paulownia) of low density hardwood
- Thermal conductivity of untreated and chemically treated poplar bark and wood
- Sorption behavior and swelling of citric acid and sorbitol (SorCA) treated wood
- Reaction mechanisms of furfuryl alcohol polymer with wood cell wall components