INVESTIGATION OF CHEMICAL CHANGES IN THE STRUCTURE OF THERMALLY MODIFIED WOOD

Thermal modification beneficially alters several technological parameters of wood. The changes in the physical parameters are due to the significant alterations of the structure and the chemical composition of wood, which take place during the modification process. These changes are complex and some...

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Autores principales:	Niemz,P, Hofmann,T, Rétfalvi,T
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2010
Materias:	Thermally treated wood chemical properties mechanical properties linear correlations
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2010000200002
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spelling	oai:scielo:S0718-221X20100002000022010-09-01INVESTIGATION OF CHEMICAL CHANGES IN THE STRUCTURE OF THERMALLY MODIFIED WOODNiemz,PHofmann,TRétfalvi,T Thermally treated wood chemical properties mechanical properties linear correlations Thermal modification beneficially alters several technological parameters of wood. The changes in the physical parameters are due to the significant alterations of the structure and the chemical composition of wood, which take place during the modification process. These changes are complex and some aspects are still far from being completely understood. Various industrially important hardwoods and softwoods have been treated in an autoclave in N2 atmosphere. The physical (density, L-value, moisture content, bending strength, MOE) and chemical (pH, hemicellulose-, total phenol- and soluble carbohydrate content) parameters have been measured and evaluated. By establishing linear correlations between physical and chemical parameters the chemical changes affecting the physical properties could be investigated and tracked. Very good correlations have been found for hardwood samples, whereas for softwoods only poor correlations have been established. Results could contribute to a better understanding of the reactions of thermal modification, and could furthermore provide a basis for wood species dependent technology optimization in the future.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.12 n.2 20102010-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2010000200002en10.4067/S0718-221X2010000200002
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Thermally treated wood chemical properties mechanical properties linear correlations
spellingShingle	Thermally treated wood chemical properties mechanical properties linear correlations Niemz,P Hofmann,T Rétfalvi,T INVESTIGATION OF CHEMICAL CHANGES IN THE STRUCTURE OF THERMALLY MODIFIED WOOD
description	Thermal modification beneficially alters several technological parameters of wood. The changes in the physical parameters are due to the significant alterations of the structure and the chemical composition of wood, which take place during the modification process. These changes are complex and some aspects are still far from being completely understood. Various industrially important hardwoods and softwoods have been treated in an autoclave in N2 atmosphere. The physical (density, L-value, moisture content, bending strength, MOE) and chemical (pH, hemicellulose-, total phenol- and soluble carbohydrate content) parameters have been measured and evaluated. By establishing linear correlations between physical and chemical parameters the chemical changes affecting the physical properties could be investigated and tracked. Very good correlations have been found for hardwood samples, whereas for softwoods only poor correlations have been established. Results could contribute to a better understanding of the reactions of thermal modification, and could furthermore provide a basis for wood species dependent technology optimization in the future.
author	Niemz,P Hofmann,T Rétfalvi,T
author_facet	Niemz,P Hofmann,T Rétfalvi,T
author_sort	Niemz,P
title	INVESTIGATION OF CHEMICAL CHANGES IN THE STRUCTURE OF THERMALLY MODIFIED WOOD
title_short	INVESTIGATION OF CHEMICAL CHANGES IN THE STRUCTURE OF THERMALLY MODIFIED WOOD
title_full	INVESTIGATION OF CHEMICAL CHANGES IN THE STRUCTURE OF THERMALLY MODIFIED WOOD
title_fullStr	INVESTIGATION OF CHEMICAL CHANGES IN THE STRUCTURE OF THERMALLY MODIFIED WOOD
title_full_unstemmed	INVESTIGATION OF CHEMICAL CHANGES IN THE STRUCTURE OF THERMALLY MODIFIED WOOD
title_sort	investigation of chemical changes in the structure of thermally modified wood
publisher	Universidad del Bío-Bío
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2010000200002
work_keys_str_mv	AT niemzp investigationofchemicalchangesinthestructureofthermallymodifiedwood AT hofmannt investigationofchemicalchangesinthestructureofthermallymodifiedwood AT retfalvit investigationofchemicalchangesinthestructureofthermallymodifiedwood
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INVESTIGATION OF CHEMICAL CHANGES IN THE STRUCTURE OF THERMALLY MODIFIED WOOD

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