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Termorretificação e Colorimetria da Madeira de Eucalyptus grandis

Authors: Zanuncio, Antônio José Vinha; Farias, Elias de Sá; Silveira, Teodorico Alves da;

Termorretificação e Colorimetria da Madeira de Eucalyptus grandis

Abstract

A termorretificação pode ser utilizada na alteração da cor da madeira, tornado-a semelhante às madeiras tropicais de maior valor agregado. O objetivo deste trabalho foi avaliar as alterações colorimétricas na madeira de Eucalyptus grandis submetida a 140, 170, 200 e 230 °C, por três, cinco e sete horas. Corpos de prova de 2 × 2 × 2 cm foram secos em estufa e termorretificados para avaliação de claridade (L), matriz vermelho (a*), matriz amarelo (b*), saturação (C) e ângulo de tinta (H). A claridade (L*) reduziu-se a partir de 140 °C; a matriz vermelho (a*), a partir de 140 °C por cinco horas; a matriz amarelo (b*), a saturação e o ângulo de tinta reduziram-se a partir de 170 °C. A temperatura se mostrou mais efetiva na alteração da cor do que o tempo. A termorretificação escureceu a madeira e pode ser uma alternativa para ampliação do uso do material.

Keywords

claridade, heat treatment, tonality angle, Forestry, SD1-669.5, eucalyptus, ângulo de tinta, tratamento térmico, eucalipto, lightness

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    influence
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
16
Top 10%
Top 10%
Average
Green
gold