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

Year 2018, Volume: 1 Issue: 1, 11 - 20, 28.06.2018

Ümit Ayata , Tuğba Gürleyen Levent Gürleyen

https://doi.org/10.33725/mamad.428913

Cited By: 10

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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