| Journal: | Maderas : ciencia y tecnología |
| Database: | |
| System number: | 000541283 |
| ISSN: | 0718-221X |
| Authors: | Sodero Martins Pincelli, Ana Lúcia Piedade1 de Moura, Luiz Fernando1 Brito, José Otávio1 |
| Institutions: | 1Universidade de São Paulo, Departamento de Ciências Florestais, Piracicaba, São Paulo. Brasil |
| Year: | 2012 |
| Volumen: | 14 |
| Number: | 2 |
| Pages: | 239-248 |
| Country: | Chile |
| Language: | Inglés |
| English abstract | Eucalyptus saligna and Pinus caribaea var. hondurensis woods underwent a variety of thermal rectification treatments (from 120ºC to 180ºC) to evaluate the effect of heating on their colorimetric properties. The following color parameters were measured: lightness (L), a* coordinate (green-red coordinate), b* coordinate (blue-yellow coordinate), saturation (C), and tonality angle (H). This study demonstrates that thermal rectification can be regarded as a tool for adding value to wood through color modification by heating. Results also suggest that thermal rectification might be a tool for homogenizing wood tonality and reddish color between species. Both tested species have shown very distinct colorimetric behaviors as a function of thermal treatments. The conifer was more resistant to thermal darkening than the hardwood while exposed to temperatures below 160ºC. The green-red coordinate (a*) and the tonality angle (H) tended to be homogenized for both species, as they decreased in eucalyptus, and increased in pinus, as a function of heating. The effect of wood heating on the blue-yellow coordinate (b*), saturation (C), and tonality angle (H) was likely to be opposite between both tested species. |
| Keyword: | Eucalyptus, Pinus, Thermal treatment, Color |
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