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Chemical modification of fast-growing eucalyptus wood

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Abstract

In this study, a new simple method for chemical modification of wood from fast-growing Eucalyptus saligna (blue gum) was tested by a two-step treatment with methacryloyl chloride. The wood samples were submerged in a solution of 10 % methacryloyl chloride in dichloromethane for 15 h and then exposed to three temperatures: air dried, 50 and 100 °C for 2 h. The chemical modifications of the wood were examined by ATR-IR and 13C CP/MAS solid-state NMR; quantitative chemical composition of wood samples by means of wet chemical quantification, HPLC, TGA; colorimetric evaluation by CIELAB method and UV–Vis spectroscopy. Water uptake tests were also performed. A partial substitution of the hydroxyl by methacrylate groups on the cell wall of blue gum wood was observed, and also loss of a hemicelluloses fraction after the treatments. The colour change increased with increasing temperature in the second step of the treatment. Dimensional stability and water repellence were improved by 40–50 and 60–75 %, respectively.

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Acknowledgments

The authors would like to thank the Juan de la Cierva Program (JCI-2011-09399) of the Spanish Ministry of Science and Innovation, CNPq (National Counsel of Technological and Scientific Development), CAPES (Coordination for the Improvement of Higher Level Personnel) and University of the Basque Country (US13/07) for supporting this work. We also thank Ms. Bia Carneiro for the English revision of the manuscript.

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Correspondence to Jalel Labidi.

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Mattos, B.D., Lourençon, T.V., Serrano, L. et al. Chemical modification of fast-growing eucalyptus wood. Wood Sci Technol 49, 273–288 (2015). https://doi.org/10.1007/s00226-014-0690-8

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  • DOI: https://doi.org/10.1007/s00226-014-0690-8

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