20.500.12556/RUL-134313 Utilization of partially liquefied bark for production of particleboards Bark as a sawmilling residue can be used for producing value-added chemicals and materials. This study investigated the use of partially liquefied bark (PLB) for producing particleboard with or without synthetic adhesives. Maritime pine (Pinus pinaster Ait.) bark was partially liquefied in the presence of ethylene glycol and sulfuric acid. Four types of particleboard panels were prepared with a PLB content of 4.7 %, 9.1 %, 20 %, and 33.3 %, respectively. Another five types of particleboard panels were manufactured by using similar amounts of PLB and 10 wt.% of melamine-urea-formaldehyde (MUF) adhesives. Characterization of bark and solid residues of PLB was performed by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and automated vapor sorption (AVS). Mechanical and physical properties of the particleboard were tested according to the European standards EN 310 for determining modulus of elasticity and bending strength, EN 317 for determining thickness swelling after immersion in water, and EN 319 for determining internal bond strength. The results showed that the increase in PLB content improved the mechanical strength for the non-MUF boards, and the MUF-bonded boards with up to 20 % of PLB met the requirements for interior uses in dry conditions according to EN 312. The non-MUF boards containing 33.3 % of PLB and the MUF-bonded boards showed comparable thickness swelling and water absorption levels compared to the reference board. bark bonding partial liquefaction MUF adhesives water vapor sorption thickness swelling wood-based panels skorja lepljenje delno utekočinjen les MUF lepilo absorpcija vode debelinski nabrek leseni ploščni kompoziti true false true Angleški jezik Slovenski jezik Članek v reviji 2022-01-05 12:02:50 2022-01-05 12:02:56 2022-09-13 03:54:28 0000-00-00 00:00:00 2020 0 0 14 str. iss. 15, art. 5253 Vol. 10 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*8 2076-3417 10.3390/app10155253 24100355 RAZ_Jiang_Wen_2020.pdf RAZ_Jiang_Wen_2020.pdf 1 6AA4B8B96CB6CFF83412846E71F31552 d05734e52ac6b797a19b8301c3c16371732ca21741d51de02af0a213b7d12476 12f0c511-6e17-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=152701 https://www.mdpi.com/2076-3417/10/15/5253 1 defd500b-6e16-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=152700 Biotehniška fakulteta 0 0 0