The Effect of Weathering on Color and Glossiness Properties of Polyurethane-Modified Water-Based Varnish Layers Applied to Thermally Treated Ash Wood

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dc.contributor.authorUlay, Goksel
dc.contributor.authorAkter, Mete
dc.contributor.authorCakicier, Nevzat
dc.contributor.authorPeker, Huseyin
dc.contributor.authorAyata, Umit
dc.contributor.authorAtilgan, Abdi
dc.contributor.authorCiftci, Seymen
dc.date.accessioned2026-02-28T12:18:22Z
dc.date.available2026-02-28T12:18:22Z
dc.date.issued2025
dc.departmentBayburt Üniversitesi
dc.description.abstractThe effects of artificial weathering (168, 336, and 504 h) on the glossiness values and color parameters of varnished, polyurethane-modified ash wood were investigated. Samples included control samples without treatment and thermally treated samples under two different conditions (190 degrees C for 1.5 h and 212 degrees C for 2 h), all coated with a polyurethane-modified water-based varnish. In non-thermally treated and varnished samples, decreases in L* values were observed after weathering, while increases were noted in h(o), C*, b*, and glossiness at 60 degrees in both perpendicular and parallel directions to the fibers. After weathering, for samples thermally treated at 190 degrees C for 1.5 h and varnished, increases were observed in glossiness values at 20 degrees and 60 degrees in both directions, as well as in L*, b*, and h(o) values. Conversely, decreases were noted in a* and C* values. In samples thermally treated at 212 degrees C for 2 h and varnished, increases in a*, L*, h(o), b*, and C* values were detected after weathering, whereas decreases were observed in glossiness at all angles (20 degrees and 60 degrees) in both directions. The triangle E* values showed a decreasing trend in non-thermally treated varnished samples after weathering, while an increase was observed in samples thermally treated at 212 degrees C for 2 h and varnished.
dc.identifier.endpage7573
dc.identifier.issn1930-2126
dc.identifier.issue3
dc.identifier.scopus2-s2.0-105012444482
dc.identifier.scopusqualityQ3
dc.identifier.startpage7555
dc.identifier.urihttps://hdl.handle.net/20.500.12403/6235
dc.identifier.volume20
dc.identifier.wosWOS:001552507500034
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherNorth Carolina State Univ Dept Wood & Paper Sci
dc.relation.ispartofBioresources
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20260218
dc.subjectArtificial weathering
dc.subjectGlossiness
dc.subjectAsh wood
dc.subjectColor
dc.subjectWater based varnish
dc.titleThe Effect of Weathering on Color and Glossiness Properties of Polyurethane-Modified Water-Based Varnish Layers Applied to Thermally Treated Ash Wood
dc.typeArticle

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