Effect of heat treatment on color and glossiness properties of zebrano, sapeli and merbau woods

Abstract

Heat treatment is one of the methods of wood modification and it is known that it changes the technological properties of wood. In this study, the determination of the colour and glossiness values on the wood species which heat treated according to ThermoWood method (at 212^oC for 1 hour and 2 hours) that is obtained from, zebrano (Microberlinia brazzavillensis), sapelli (Entandrphragma cylindrocum) and merbau (Intsia bijuga) was aimed. The colour and glossiness values were determined on samples prepared from different tree species. Lightness (L*) and yellow colour (b*) tone values were decreased by heat treatment. The glossiness values of the test specimens were also changed by heat treatment application. According to these results; the highest total colour difference value (ΔE*) was determined on merbau samples, the lowest total colour difference value (ΔE*) was determined on sapelli samples. According to obtained data; it can be said that the colour and glossiness values of wood of zebrano, sapelli and merbau was affected by heat treatment. 

Keywords

• Heat treatment,Color,Glossiness,Sapeli,Zebrano

Zebrano, sapelli ve merbau odunlarının renk ve parlaklık özellikleri üzerine ısıl işlemin etkisi

Abstract

Isıl işlem uygulaması odun modifikasyon yöntemlerinden birisidir ve odunun teknolojik özelliklerini değiştirdiği bilinmektedir. Bu çalışmada, zebrano (Microberlinia brazzavillensis), sapelli (Entandrphragma cylindrocum) ve merbau (Intsia bijuga)'dan elde edilen ve ThermoWood yöntemine (212^oC'de 1 saat ve 2 saat) göre ısıl işlem görmüş odun türlerinde renk ve parlaklık değerlerinin belirlenmesi amaçlanmıştır. Farklı ağaç türlerinden elde edilen örneklerin renk ve parlaklık değerleri ölçülmüştür. Işıklılık (L*) ve sarı renk (b*) tonu değerleri ısıl işlem tarafından azalmıştır. Isıl işlem uygulaması ile deney örneklerinin parlaklık değerleri de değişmiştir. En yüksek toplam renk farkı değeri (ΔE*) merbau odununda belirlenirken, en düşük toplam renk farkı değeri (ΔE*) sapelli odununda belirlenmiştir. Elde edilen verilere göre; zebrano, sapelli ve merbau ağaçlarının renk ve parlaklık değerlerinin ısıl işlemden etkilendiği söylenebilir.

Keywords

• Isıl işlem,Renk,Parlaklık,Sapeli,Zebrano

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