Utilization of partially liquefied bark for production of particleboards
ID Jiang, Wen (Author), ID Adamopoulos, Stergios (Author), ID Hosseinpourpia, Reza (Author), ID Žigon, Jure (Author), ID Petrič, Marko (Author), ID Šernek, Milan (Author), ID Medved, Sergej (Author)

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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.

Keywords:bark, bonding, partial liquefaction, MUF adhesives, water vapor sorption, thickness swelling, wood-based panels
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:BF - Biotechnical Faculty
Publication status:Published
Publication version:Version of Record
Number of pages:14 str.
Numbering:Vol. 10, iss. 15, art. 5253
PID:20.500.12556/RUL-134313 This link opens in a new window
ISSN on article:2076-3417
DOI:10.3390/app10155253 This link opens in a new window
COBISS.SI-ID:24100355 This link opens in a new window
Publication date in RUL:05.01.2022
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Record is a part of a journal

Title:Applied sciences
Shortened title:Appl. sci.
COBISS.SI-ID:522979353 This link opens in a new window


License:CC BY 4.0, Creative Commons Attribution 4.0 International
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:01.08.2020

Secondary language

Keywords:skorja, lepljenje, delno utekočinjen les, MUF lepilo, absorpcija vode, debelinski nabrek, leseni ploščni kompoziti


Funder:Drugi - Drug financer ali več financerjev
Funding programme:Formas
Project number:942-2016-2
Name:Utilization of renewable biomass and waste materials for production of environmental-friendly, bio-based composites

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