20.500.12556/RUP-23184 Wood modification using Fast Pyrolysis Bio-Oil (FPBO) formulation development, characterization, and evaluation of wood performance This study presents a wood modification process using Fast Pyrolysis Bio-Oil (FPBO) as a fully biobased alternative to conventional, fossil-based and potentially toxic preservatives such as copper salts, organic biocides, and creosote. Standard FPBO was used in the devel- opment of 10 formulations, which were systematically characterized in terms of pot life, viscosity evolution, density, and pH. Radiata pine samples were subsequently impregnated using a bench-scale reactor, with specimens prepared in multiple geometries to assess treat- ment performance across different dimensions. The modified wood was comprehensively characterized with respect to moisture uptake, dimensional stability, density, mechanical strength, fixation efficiency, biological durability, and VOC emissions. Additional screening focused on properties relevant to outdoor applications, including aesthetic appearance and colour uniformity after UV exposure. The results enabled the identification of three top-performing formulations, treatments H, A, and E, which exhibited the most favourable balance between durability, environmental performance, and structural integrity. Overall, the findings demonstrate the strong potential of FPBO-based impregnation as a sustainable, multifunctional, and high-performance alternative for advanced wood protection systems. Ta študija predstavlja postopek modifikacije lesa z uporabo bioolja s hitro pirolizo (FPBO) kot popolnoma biološko alternativo konvencionalnim, fosilnim in potencialno strupenim konzervansom, kot so bakrove soli, organski biocidi in kreozot. Standardni FPBO je bil uporabljen pri razvoju 10 formulacij, ki so bile sistematično okarakterizirane glede na čas obdelave, razvoj viskoznosti, gostoto in pH. Vzorci bora Radiata so bili nato impregnirani z reaktorjem v laboratorijskem merilu, pri čemer so bili vzorci pripravljeni v več geometrijah za oceno učinkovitosti obdelave v različnih dimenzijah. Modificiran les je bil celovito okarakteriziran glede na absorpcijo vlage, dimenzijsko stabilnost, gostoto, mehansko trdnost, učinkovitost fiksacije, biološko trajnost in emisije HOS. Dodatno presejanje se je osredotočilo na lastnosti, pomembne za zunanjo uporabo, vključno z estetskim videzom in enakomernostjo barve po izpostavljenosti UV-žarkom. Rezultati so omogočili identifikacijo treh najugodnejših formulacij, obdelav H, A in E, ki so pokazale najugodnejše ravnovesje med trajnostjo, okoljsko učinkovitostjo in strukturno celovitostjo. Na splošno ugotovitve kažejo na velik potencial impregnacije na osnovi FPBO kot trajnostne, večnamenske in visoko učinkovite alternative za napredne sisteme zaščite lesa. wood modification fast pyrolysis bio-oil (FPBO) durability bio-based impregnation treatment modifikacija lesa bioolje s hitro pirolizo (FPBO) trajnost impregnacija na biološki osnovi true false true Angleški jezik Slovenski jezik Članek v reviji 2026-06-29 09:54:25 2026-06-29 09:54:32 2026-06-30 03:04:55 0000-00-00 00:00:00 2026 0 0 str. 1-21 iss. 6, [article no.] 709 Vol. 17 Jun. 2026 0000-00-00 Zaloznikova NiDoloceno NiDoloceno 0000-00-00 0000-00-00 2026-06-17 630*83 1999-4907 10.3390/f17060709 282892291 RAZ_Sandak_Anna_Malgorzata_2026.pdf RAZ_Sandak_Anna_Malgorzata_2026.pdf 1 6EF5C727D7AED245C0494759CA192A58 e1b0d5e269aa43d79dcfabe412303c2c5cf73e3994085f1560c1c998cc772903 c25b5f72-738f-11f1-9e8d-005056ac49c0 https://repozitorij.upr.si/Dokument.php?lang=slv&id=33891 https://www.mdpi.com/1999-4907/17/6/709 1 992add87-738f-11f1-9e8d-005056ac49c0 https://repozitorij.upr.si/Dokument.php?lang=slv&id=33890 Inštitut Andrej Marušič 0 0 0