Colour responses of Eucalyptus grandis wood to the Brazilian process of thermal modification
Abstract: A study of colour assessment, using the CIEL*a*b* system, was conducted with samples of Eucalyptus grandis wood thermally treated by the Brazilian industrial process of thermal modification, VAP HolzSysteme®, at three different temperatures, i.e. 140, 160 and 180 °C. Previous to the treatm...
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| Lenguaje: | English |
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Universidad del Bío-Bío
2018
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oai:scielo:S0718-221X20180004006612019-02-14Colour responses of Eucalyptus grandis wood to the Brazilian process of thermal modificationGriebeler,Carolina Gomes de OliveiraMatos,Jorge Luis Monteiro deMuniz,Graciela Ines Bolzón deNisgoski,SilvanaBatista,Djeison CesarRodríguez,Carmen Iglesias Colorimetry eucalypt wood heat treatment VAP HolzSysteme® wood grading. Abstract: A study of colour assessment, using the CIEL*a*b* system, was conducted with samples of Eucalyptus grandis wood thermally treated by the Brazilian industrial process of thermal modification, VAP HolzSysteme®, at three different temperatures, i.e. 140, 160 and 180 °C. Previous to the treatment, the samples were classified into three groups according to their distance to the wood pith, on the radial direction. All thermally modified samples presented a noticeable colour change, confirmed by high values of ΔE*. As the intensity of the treatment increased, the eucalypt samples presented an increase of red colour tone (a*) (up to 160 ºC) and a decrease of colour lightness (L*). Significant colour differences were found among the classified groups, for both untreated and thermally modified samples. The eucalypt samples groups showed different colour responses when thermally treated at 140 and 160 ºC. At 180 ºC the groups didn’t show a significant colour response variation.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.20 n.4 20182018-10-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2018000400661en10.4067/S0718-221X2018005041201 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
Colorimetry eucalypt wood heat treatment VAP HolzSysteme® wood grading. |
| spellingShingle |
Colorimetry eucalypt wood heat treatment VAP HolzSysteme® wood grading. Griebeler,Carolina Gomes de Oliveira Matos,Jorge Luis Monteiro de Muniz,Graciela Ines Bolzón de Nisgoski,Silvana Batista,Djeison Cesar Rodríguez,Carmen Iglesias Colour responses of Eucalyptus grandis wood to the Brazilian process of thermal modification |
| description |
Abstract: A study of colour assessment, using the CIEL*a*b* system, was conducted with samples of Eucalyptus grandis wood thermally treated by the Brazilian industrial process of thermal modification, VAP HolzSysteme®, at three different temperatures, i.e. 140, 160 and 180 °C. Previous to the treatment, the samples were classified into three groups according to their distance to the wood pith, on the radial direction. All thermally modified samples presented a noticeable colour change, confirmed by high values of ΔE*. As the intensity of the treatment increased, the eucalypt samples presented an increase of red colour tone (a*) (up to 160 ºC) and a decrease of colour lightness (L*). Significant colour differences were found among the classified groups, for both untreated and thermally modified samples. The eucalypt samples groups showed different colour responses when thermally treated at 140 and 160 ºC. At 180 ºC the groups didn’t show a significant colour response variation. |
| author |
Griebeler,Carolina Gomes de Oliveira Matos,Jorge Luis Monteiro de Muniz,Graciela Ines Bolzón de Nisgoski,Silvana Batista,Djeison Cesar Rodríguez,Carmen Iglesias |
| author_facet |
Griebeler,Carolina Gomes de Oliveira Matos,Jorge Luis Monteiro de Muniz,Graciela Ines Bolzón de Nisgoski,Silvana Batista,Djeison Cesar Rodríguez,Carmen Iglesias |
| author_sort |
Griebeler,Carolina Gomes de Oliveira |
| title |
Colour responses of Eucalyptus grandis wood to the Brazilian process of thermal modification |
| title_short |
Colour responses of Eucalyptus grandis wood to the Brazilian process of thermal modification |
| title_full |
Colour responses of Eucalyptus grandis wood to the Brazilian process of thermal modification |
| title_fullStr |
Colour responses of Eucalyptus grandis wood to the Brazilian process of thermal modification |
| title_full_unstemmed |
Colour responses of Eucalyptus grandis wood to the Brazilian process of thermal modification |
| title_sort |
colour responses of eucalyptus grandis wood to the brazilian process of thermal modification |
| publisher |
Universidad del Bío-Bío |
| publishDate |
2018 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2018000400661 |
| work_keys_str_mv |
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