İnfluence of thermal pretreatments on dimensional change and humidity sensitivity of densified spruce and poplar wood

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dc.authorwosidPelit, Hüseyin/KFS-4932-2024en_US
dc.contributor.authorPelit, Hüseyin
dc.contributor.authorYorulmaz, Ramazan
dc.date.accessioned2024-08-23T16:03:48Z
dc.date.available2024-08-23T16:03:48Z
dc.date.issued2024en_US
dc.departmentDüzce Üniversitesien_US
dc.description.abstractDensification modification is an effective method to improve many properties of wood. However, densified wood is sensitive to humidity and is not dimensionally stable. The effect of thermal pretreatments on the dimensional change and humidity sensitivity of densified Picea orientalis (spruce) and Populus nigra (poplar) wood were investigated. A thermal pre-treatment was applied on the wood specimens at 140 degrees C, 160 degrees C, 180 degrees C, and 200 degrees C for 7 h and 9 h. Wood specimens were then compressed at ratios of 20 % and 40 % at a temperature of 150 degrees C. The results showed that spring-back and thickness swelling increased in all specimens (thermally pre-treated and untreated) depending on the increase in compression ratio. However, set-recovery wasdetermined higher at20 % compression ratio.Theequilibrium moisturecontentvaluesof untreated specimens and thermally pre-treated specimens at low temperatures (140 degrees C and 160 degrees C) were found lower than uncompressed specimens. The impact of compression ratio on equilibrium moisture content was not clear. Thermal pretreatments significantly affected the dimensional stability and hygroscopicity of densified specimens (especially poplar wood). Depending on the increase in thermal pre-treatment temperature and duration, spring-back, set-recovery and thickness swelling in wood specimens decreased up to 31 %, 67 % and 62 %, respectively. In addition, equilibrium moisture content and water absorption decreased with the increase in thermal pre-treatment temperature and duration. Moreover, the thermal treatment temperature was more important than duration on the investigated properties.en_US
dc.description.sponsorshipResearch Fund of Duzce University [BAP-2018.07.01.673]en_US
dc.description.sponsorshipThe authors are grateful for the support of the Research Fund of Duzce University, Grant No. BAP-2018.07.01.673.en_US
dc.identifier.doi10.22320/s0718221x/2024.09
dc.identifier.issn0717-3644
dc.identifier.issn0718-221X
dc.identifier.urihttps://doi.org/10.22320/s0718221x/2024.09
dc.identifier.urihttps://hdl.handle.net/20.500.12684/13904
dc.identifier.volume26en_US
dc.identifier.wosWOS:001153320000003en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherUniv Bio-Bioen_US
dc.relation.ispartofMaderas-Ciencia Y Tecnologiaen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectDensificationen_US
dc.subjectdimensional stabilityen_US
dc.subjecthygroscopicityen_US
dc.subjectspring-backen_US
dc.subjectthermal treatmenten_US
dc.subjectthickness swellingen_US
dc.subjectwood materialen_US
dc.subjectHeat-Treatmenten_US
dc.subjectMechanical-Propertiesen_US
dc.subjectPhysical-Propertiesen_US
dc.subjectSet-Recoveryen_US
dc.subjectUludag Firen_US
dc.subjectPine Wooden_US
dc.subjectCompressive Deformationen_US
dc.subjectWater-Absorptionen_US
dc.subjectDecay Resistanceen_US
dc.subjectHigh-Temperatureen_US
dc.titleİnfluence of thermal pretreatments on dimensional change and humidity sensitivity of densified spruce and poplar wooden_US
dc.typeArticleen_US

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