%0 Journal Article
%T Effect of thermal rectification on colors of Eucalyptus Saligna and Pinus caribaea Woods
%A Sodero Martins Pincelli
%A Ana L¨²cia Piedade
%A de Moura
%A Luiz Fernando
%A Brito
%A Jos¨¦ Ot¨¢vio
%J Maderas. Ciencia y tecnolog¨ªa
%D 2012
%I Scientific Electronic Library Online
%R 10.4067/S0718-221X2012000200010
%X 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.
%K eucalyptus
%K pinus
%K thermal treatment
%K color.
%U http://www.scielo.cl/scielo.php?script=sci_abstract&pid=S0718-221X2012000200010&lng=en&nrm=iso&tlng=en