Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/5946
Título: Quality assessment of heat-treated wood by NIR spectroscopy
Autor: Esteves, Bruno
Pereira, Helena
Palavras-chave: wood
heat treatment
NIR spectroscopy
Data: 2008
Editora: Springer
Citação: "Holz als Roh- und Werkstoff". ISSN 0018-3768. 66(5) (2008) 323-332
Resumo: NIR spectroscopy was tested for predicting the properties of heat treated wood using pine (Pinus pinaster) and eucalypt (Eucalyptus globulus) woods with two types of treatment: in oven and in a steam autoclave. Mass loss, equilibrium moisture content, dimensional stability, MOE, bending strength, colour CIELAB parameters and extractives content were determined. NIR spectra were obtained using a fibre probe on the radial surface of the samples. NIR models for mass loss showed very high coefficients of determination (R2) for cross validation ranging from 96– 98%. The models obtained for wood properties were in general good with coefficients of determination ranging from 78–95% for equilibrium moisture content, 53–78% for dimensional stability, 47–89% for MOE, 75–77% for bending strength and 84–99%, 52–96% and 66–98% for colour parameters L, a∗ and b∗, respectively. R2 of the models for extractive content varied between 41.9–79.8% for pine and between 35.3–82.2% for eucalypt wood. NIR spectroscopy showed a good potential for quality control and characterization of heat treated woods.
Peer review: yes
URI: http://hdl.handle.net/10400.5/5946
ISSN: 0018-3768
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