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Physical and mechanical properties of wood treated with chitosan-caffeine formulations

cris.virtual.author-orcid0000-0002-1863-5122
cris.virtual.author-orcid0000-0002-6713-8077
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.author-orcid0000-0002-2060-0295
cris.virtual.author-orcid0000-0002-3800-8089
cris.virtual.author-orcid0000-0002-7508-0610
cris.virtual.author-orcid0000-0002-5472-6128
cris.virtual.author-orcid0000-0003-3026-5192
cris.virtualsource.author-orcid6a8b732a-4d41-4035-915d-4faca811a0d6
cris.virtualsource.author-orcid5ad889ad-842c-4ab2-9a0e-ea77e6f75f9c
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcidba3d37ef-69d5-4dee-9704-c49b1a0a0cd8
cris.virtualsource.author-orcida9b408fd-bf11-40cc-b4af-169425015799
cris.virtualsource.author-orcidf2cc771f-2e59-4a98-8e78-3626790912a0
cris.virtualsource.author-orcid62b18ab5-eecf-4f1a-8afd-5cf500b29bf9
cris.virtualsource.author-orcidaf1b0375-c966-4ceb-a9cc-69bf4ed40a81
dc.abstract.enThere is growing interest in developing natural wood preservatives, particularly in response to the escalating challenges posed by environmental degradation. Caffeine is a bio-based preservative that improves decay resistance of treated wood, however it is also sensitive to leaching from wood when exposed to water. Combining chitosan-caffeine formulations limits the leaching of caffeine from impregnated wood, thereby increasing its resistance even under outdoor conditions. This research aimed to evaluate the properties of wood impregnated with chitosan-caffeine formulations, focusing on wettability (contact angle measurement), mechanical properties (bending strength), and sorption behavior. The contact angle measurement revealed that wood treated with chitosan and chitosan-caffeine formulations exhibited an improvement in water resistance compared to untreated wood and wood treated with caffeine alone. However, this resistance showed only for short-term application. Both caffeine and chitosan treatments reduced the equilibrium moisture content during adsorption and desorption phases in the relative air humidity range from 0 to 0.95. The application of chitosan-caffeine formulations for wood impregnation resulted in a reduction in equilibrium moisture content, as well as hygroscopicity of the treated wood. Treatment with all formulation variants had no effect on the mechanical parameters, including modulus of elasticity and modulus of rupture. In addition, FTIR results indicated that both caffeine and chitosan interact with wood components. These findings suggest that chitosan-caffeine formulations are promising as natural wood preservatives, offering an improved hygroscopicity while maintaining the mechanical properties of the treated wood.
dc.affiliationWydział Leśny i Technologii Drewna
dc.affiliation.instituteKatedra Chemii
dc.affiliation.instituteKatedra Nauki o Drewnie i Techniki Cieplnej
dc.affiliation.instituteKatedra Chemicznej Technologii Drewna
dc.contributor.authorWoźniak, Magdalena
dc.contributor.authorMajka, Jerzy
dc.contributor.authorKwaśniewska-Sip, Patrycja
dc.contributor.authorKrystofiak, Tomasz
dc.contributor.authorLis, Barbara Teresa
dc.contributor.authorRoszyk, Edward
dc.contributor.authorCofta, Grzegorz
dc.contributor.authorRatajczak, Izabela
dc.date.accessioned2025-05-09T10:30:14Z
dc.date.available2025-05-09T10:30:14Z
dc.date.issued2025
dc.description.bibliographybibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if2,4
dc.description.number2
dc.description.points140
dc.description.volume83
dc.identifier.doi10.1007/s00107-025-02226-y
dc.identifier.eissn1436-736X
dc.identifier.issn0018-3768
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/2770
dc.languageen
dc.relation.ispartofEuropean Journal of Wood and Wood Products
dc.relation.pagesart. 62
dc.rightsClosedAccess
dc.sciencecloudsend
dc.titlePhysical and mechanical properties of wood treated with chitosan-caffeine formulations
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue2
oaire.citation.volume83