Tarçın (Cinnamomum camphora (L.) J. Presl) Ağacına Ait Ahşabında Shore D Sertlik, Renk Parametreleri, Parlaklık ve Beyazlık İndeksi Değerleri Üzerine Isıl İşlemin Etkisi

Öz

Günümüzde ahşap malzeme için farklı metotlar kullanılarak ısıl işlem uygulamaları yapılmaktadır. Bu uygulamalar ile ahşabın sahip olduğu renk, parlaklık gibi yüzey özelliklerinin değiştiği bilinmektedir. Bu çalışmada, tarçın (Cinnamomum camphora (L.) J. Presl) ağacına ait odunlarında yapılan 200oC’de 3 saat süre ile ısıl işlem sonrasında meydana gelen bazı yüzey özellikleri [renk parametreleri, parlaklık değerleri ve beyazlık indeksi (WI*)] ve shore D sertlik değeri araştırılmıştır. Elde dilen sonuçlara göre, çok değişkenli varyans analizi sonuçları anlamlı olarak bütün testler üzerinde belirlenmiştir. ∆L* için -28.69, ∆C* için -16.06, ∆a* için -6.57, ∆H* için 21.61, ∆b* için -12.44 ve ∆E* için 31.95 olarak belirlenmiştir. Liflere dik ve paralel yönlerde WI* değerlerinde (sırasıyla %64.15 ve %91.44), 20o’de liflere dik ve paralel yönlerde parlaklık değerlerinde, shore D sertlik değerlerinde (%15.86), L* (%49.47), a* (%71.49), b* (%64.72) ve C* (%65.87) parametrelerinde azalmalar elde edilmiştir. ho parametresinde, 60o ve 85o’lerde liflere dik ve paralel yönlerde parlaklık değerlerinde ise artışlar belirlenmiştir. Isıl işlem ile ahşap malzemenin sahip olduğu yüzey özelliklerinin değiştiği görülmüştür.

Anahtar Kelimeler

• Cinnamomum camphora
• Beyazlık indeksi
• Parlaklık
• Renk
• Isıl işlem

The Effect of Heat Treatment on Shore D Hardness, Color Parameters, Glossiness, and Whiteness Index Values of Camphor (Cinnamomum camphora (L.) J. Presl) Wood

Öz

The applications of heat treatment on wood material are performed using various methods today. It is known that these applications can change the surface properties of wood, such as color and glossiness. In this study, some surface properties (color parameters, glossiness values, and whiteness index (WI*)) and shore D hardness value of wood from the camphor (Cinnamomum camphora (L.) J. Presl) subjected to heat treatment at 200°C for 3 h were investigated. According to the obtained results, the multivariate analysis of variance results was significant for all tests. The values for ∆L* were -28.69, ∆C* was -16.06, ∆a* was -6.57, ∆H* was 21.61, ∆b* was -12.44, and ∆E* was 31.95. In WI* values, there were decreases in both perpendicular and parallel directions to the fibers (64.15% and 91.44% respectively), glossiness values at 20° in both perpendicular and parallel directions to the fibers, shore D hardness values (15.86%), L* (49.47%), a* (71.49%), b* (64.72%), and C* (65.87%) parameters. Increases in ho parameter and glossiness values at 60° and 85° were observed in both perpendicular and parallel directions to the fibers. It was observed that the surface properties of the wood material changed with heat treatment.

Anahtar Kelimeler

• Cinnamomum camphora
• Whiteness Index
• Glossiness
• Color
• Heat Treatment

Kaynakça

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