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Enhancing Functional and Visual Properties of Paulownia Wood Through Thermal Modification in a Steam Atmosphere

cris.virtual.author-orcid0000-0002-1750-0437
cris.virtual.author-orcid0000-0002-0167-0722
cris.virtual.author-orcid0000-0003-0076-3190
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid85887364-85ee-4a53-91e4-4f76e156f319
cris.virtualsource.author-orcidaec62b40-2662-43a5-96ef-5b8709af2d4c
cris.virtualsource.author-orcidbe4662f0-4144-45b2-96f7-33f2859e6d5e
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
dc.abstract.enPaulownia elongata wood is characterized by rapid mass gain, but its limited mechanical strength hinders engineering applications. This study aimed to determine the effect of thermal modification in a steam atmosphere (at temperatures of 180 °C and 190 °C for 12 or 6 h with 3 or 6 h of steam dosing) on wood’s selected physicochemical and aesthetic properties. Color changes (CIELAB), chemical composition (FTIR), density, and compressive strength parallel to the grain were evaluated. The results showed a clear darkening of the wood, a shift in hues towards red and yellow, and an increase in color saturation depending on the treatment parameters. FTIR spectroscopy confirmed a reduction in hydroxyl and carbonyl groups, indicating thermal degradation of hemicelluloses and extractives. Wood density remained relatively stable, despite observed mass losses and reduced swelling. The most significant increase in compressive strength, reaching 27%, was achieved after 6 h of modification at 180 °C with a concurrent 6 h steam dosing time. The obtained results confirm that thermal treatment can effectively improve the functional and visual properties of paulownia wood, favoring its broader application in the furniture and construction industries.
dc.affiliationWydział Leśny i Technologii Drewna
dc.affiliation.instituteKatedra Chemicznej Technologii Drewna
dc.affiliation.instituteKatedra Obrabiarek i Podstaw Konstrukcji Maszyn
dc.contributor.authorDoczekalska, Beata
dc.contributor.authorStachowiak-Wencek, Agata
dc.contributor.authorBujnowicz, Krzysztof
dc.contributor.authorSydor, Maciej
dc.date.access2025-08-06
dc.date.accessioned2025-08-06T08:00:09Z
dc.date.available2025-08-06T08:00:09Z
dc.date.copyright2025-07-22
dc.date.issued2025
dc.description.abstract<jats:p>Paulownia elongata wood is characterized by rapid mass gain, but its limited mechanical strength hinders engineering applications. This study aimed to determine the effect of thermal modification in a steam atmosphere (at temperatures of 180 °C and 190 °C for 12 or 6 h with 3 or 6 h of steam dosing) on wood’s selected physicochemical and aesthetic properties. Color changes (CIELAB), chemical composition (FTIR), density, and compressive strength parallel to the grain were evaluated. The results showed a clear darkening of the wood, a shift in hues towards red and yellow, and an increase in color saturation depending on the treatment parameters. FTIR spectroscopy confirmed a reduction in hydroxyl and carbonyl groups, indicating thermal degradation of hemicelluloses and extractives. Wood density remained relatively stable, despite observed mass losses and reduced swelling. The most significant increase in compressive strength, reaching 27%, was achieved after 6 h of modification at 180 °C with a concurrent 6 h steam dosing time. The obtained results confirm that thermal treatment can effectively improve the functional and visual properties of paulownia wood, favoring its broader application in the furniture and construction industries.</jats:p>
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if4,9
dc.description.number15
dc.description.points100
dc.description.versionfinal_published
dc.description.volume17
dc.identifier.doi10.3390/polym17152000
dc.identifier.issn2073-4360
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/4093
dc.identifier.weblinkhttps://www.mdpi.com/2073-4360/17/15/2000
dc.languageen
dc.pbn.affiliationforestry
dc.relation.ispartofPolymers
dc.relation.pagesart. 2000
dc.rightsCC-BY
dc.sciencecloudsend
dc.share.typeOPEN_JOURNAL
dc.subject.enpaulownia wood
dc.subject.enthermal modification
dc.subject.enFTIR spectroscopy
dc.subject.encolor
dc.subject.encompressive strength
dc.titleEnhancing Functional and Visual Properties of Paulownia Wood Through Thermal Modification in a Steam Atmosphere
dc.title.volumeSpecial Issue Eco-Friendly Wood-Based Composites-Challenges and Prospects
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue15
oaire.citation.volume17