20.500.12556/RUL-152884 Particleboards bonded by an imidazole-based adhesive system Particleboards with different combinations of the adhesive material imidazole, citric acid, and sorbitol were produced. Softwood sawdust from a Swedish sawmill was mixed with an aqueous solution of the chemicals and then dried to 0% moisture content prior to pressing. The boards were pressed to a target density of 700 kg m−3 at either 200 °C or 220 °C for 10 min. The hygroscopic and mechanical properties of the boards were clearly better at 220 °C than 200 °C for all used chemical combinations. A combination of imidazole (14.4 wt%) and citric acid (11.3 wt%) led to the best results, where the thickness swelling after 24 h of water immersion was 6.3% and the internal bonding strength was 0.57 MPa. The modulus of rupture and modulus of elasticity were 3.3 MPa and 1.1 GPa, respectively. Cyclic accelerated weathering showed exceptional stability with a thickness change after boiling and drying of only 2.1% compared to the initial dry thickness. This study indicates that the presence of imidazole leads to greatly improved hygroscopic properties and good internal bonding strength when used in particleboards. adhesion citric acid esterification ionic liquids wood composite lepljenje citronska kislina esterifikacija ionske tekočine lesni kompoziti true false false Angleški jezik Slovenski jezik Neznano 2023-12-11 09:15:01 2023-12-11 09:15:06 2023-12-12 03:37:59 0000-00-00 00:00:00 2023 0 0 19 str. iss. 22 Vol. 16 2023 0000-00-00 Zaloznikova NiDoloceno apc 0000-00-00 0000-00-00 2023-01-01 630*8 1996-1944 10.3390/ma16227201 176783875 RAZ_Scharf_Alexander_2023.pdf RAZ_Scharf_Alexander_2023.pdf 1 5E5DEDBF04682BC64958EB495E191698 c924efb1247ec07db02a99a72fa55de3015b40a067d1fc9dc150c4934dd99216 b8934268-97fe-11ee-bb90-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=178589 https://www.mdpi.com/1996-1944/16/22/7201 1 65689095-97fd-11ee-bb90-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=178587 Biotehniška fakulteta 0 0 0