Wood modification using Fast Pyrolysis Bio-Oil (FPBO)Sandak, Anna Malgorzata (Avtor) Poohphajai, Faksawat (Avtor) Selmanović, Amina (Avtor) Herrera Diaz, Rene Alexander (Avtor) Grzybek, Jakub (Avtor) Peeters, Kelly (Avtor) Perumal, Sasikala (Avtor) Földvári-Nagy, Edit (Avtor) Han, Lei (Avtor) Acquah, Richard (Avtor) Sandak, Jakub Michal (Avtor) wood modificationfast pyrolysis bio-oil (FPBO)durabilitybio-based impregnation treatmentThis 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.20262026-06-29 09:54:25Članek v reviji23184UDK: 630*83ISSN pri članku: 1999-4907DOI: 10.3390/f17060709COBISS.SI-ID: 282892291sl