Abstract
Thermogravimetry has been widely applied to the study of wood and cellulose materials. There is a general agreement that decomposition of hemicellulose, cellulose, and ligning take place in a relatively narrow range of temperature, partially overlapping. There is no a definitive demonstration of which thermal feature corresponds to each component. In this study, three hardwood and two softwood species were considered: Castannea sativa, Eucaliptus globulus, Quercus robur, Pinus pinaster, and Pinus sylvestris. Thermogravimetric analysis of wood powder, ethanol-extracted wood, holocellulose, and lignin, obtained from those species revealed some important differences between hardwood and softwood holocelluloses and an important role of the ethanol-extractives, which explain the different behavior observed in both kinds of wood. FTIR spectra obtained from the evolved gases helped to clarify some degradation steps.
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Acknowledgements
This study was partially funded by the Spanish Ministerio de Educacion y Ciencia MTM2008-00166 and MAT2010-21342-C02-01. The first author acknowledges Consellería de Educación e Ordenación Universitaria of Xunta de Galicia (Spain) for supporting this study.
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Sebio-Puñal, T., Naya, S., López-Beceiro, J. et al. Thermogravimetric analysis of wood, holocellulose, and lignin from five wood species. J Therm Anal Calorim 109, 1163–1167 (2012). https://doi.org/10.1007/s10973-011-2133-1
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DOI: https://doi.org/10.1007/s10973-011-2133-1