Effects on Surface Color and Roughness Properties of Post-Microwave Treated Eucalyptus (Eucalyptus camaldulensis Dehn) Wood

Authors : Halil Turgut Şahin

Pages : 94-101

Doi:10.59751/agacorman.1679303

View : 100 | Download : 299

Publication Date : 2025-12-24

Article Type : Research Paper

Abstract :It has been observed that weathering significantly influenced the Microwave (MW) post-treated samples. All color coordinates of Lightness (L*), red-green (a*), and yellow-blue (b*) color coordinates changed significantly. However, the highest lightness-reducing values of ΔL: -24.36 and -25.79 (metric) were observed in MW-treated samples at 180 W and 30 s. conditions for one and two-month weathered samples, respectively. It is interesting to note that two months of weathering usually impact the lighter tone of samples. Total color difference values (ΔE) appeared to increase initially at lower power levels (90 and 180 W), then decrease at higher power levels (360 and 600 W) of MW treatment conditions. It is also further evidenced by the discoloration of wood samples with chroma measurements. The MW treatments have also had an impact on increasing the trend toward higher surface roughness values in MW-treated samples under all conditions, in both directions (parallel to and perpendicular to the grain). It is also realized that post-MW treated and weathered samples show a smooth trend, with no clear effects observed under varying MW treatment conditions (power and time). The measured results found in this study are in good agreement with the results reported in the literature which indicate that heat treatments and weathering affect surface color and smoothness properties.
Keywords : Okoliptus odunu, yüzey pürüzlülüğü, renk özellikleri, mikrodalga işlemi, CIE L*a*b*, Sarıçam odunu

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