Cabreúva-vermelha (Myroxylon peruiferum L.f.) Ahşabında Ağartma Uygulaması

In this study, changes in some surface properties (whiteness index: WI*, glossiness, and color parameters) of cabreúva-vermelha (Myroxylon peruiferum L.f.) wood after bleaching treatment have been investigated. Two different chemicals were used in the bleaching treatment (C2H2O4 and H2O2 + NaOH). Significant differences were detected in all variance analyses conducted across the entire range of tests. Increases in L*, b*, and ho values were observed with both bleaching chemicals. For C* and a* values, an increase was achieved with C2H2O4 while a decrease was obtained with H2O2 + NaOH. Decreases in glossiness evaluations conducted in both directions at 60 and 85 degrees were found with bleaching treatments. The ∆E* values were found to be 10.00 in the samples exposed to the H2O2 +NaOH chemical, while they were determined to be 5.43 in the C2H2O4 chemical. The H2O2 + NaOH chemical yielded a higher ∆E* value compared to the C2H2O4 chemical. The ∆L*, ∆a*, ∆b*, and ∆C* values were obtained positively with C2H2O4. With H2O2 + NaOH, ∆L* and ∆b* values were found to be positive, while ∆a* and ∆C* values were calculated to be negative. With H2O2 + NaOH, WI* values exhibited an increase in measurements conducted in both directions.