| Journal: | Maderas : ciencia y tecnología |
| Database: | |
| System number: | 000534608 |
| ISSN: | 0718-221X |
| Authors: | Griebeler, Carolina Gomes de Oliveira1 Matos, Jorge Luis Monteiro de2 Muniz, Graciela Ines Bolzón de2 Nisgoski, Silvana2 Batista, Djeison Cesar3 Rodríguez, Carmen Iglesias1 |
| Institutions: | 1University of Lleida Department of Agroforestry Engineering, Lleida. Spain 2Federal University of Paraná Department of Forest Engineering and Technology, Paraná. Brasil 3Federal University of Espírito Santo Department of Forest and Wood Sciences, Espírito Santo. Brasil |
| Year: | 2018 |
| Volumen: | 20 |
| Number: | 4 |
| Pages: | 661-670 |
| Country: | Chile |
| Language: | Inglés |
| English 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. |
| Keyword: | Colorimetry, Eucalypt wood, Heat treatment, VAP HolzSysteme®, Wood grading. |
| Full text: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
