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Particleboards with partially liquefied bark of different particle sizes

Jiang, Wen and Adamopoulos, Stergios and Petric, Marko and Sernek, Milan and Medved, Sergej (2021). Particleboards with partially liquefied bark of different particle sizes. Drewno-Wood. 64 , 43-57
[Research article]

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Abstract

This paper presents a novel method of partially liquefying bark sawmilling waste for use in making particleboards. Maritime pine (Pinus pinaster Ait.) bark of different particle sizes (fine, medium, coarse, and mixed) was partially liquefied in the presence of ethylene glycol as a solvent and sulphuric acid as a catalyst at 180 degrees C for 30 minutes. Single-layer particleboards were prepared by mixing partially liquefied bark (PLB) and wood chips at a ratio of 0.25 with no adhesives (group A) and at ratios of 0.25 or 0.1 with melamine-urea-formaldehyde (MUF) adhesives for additional bonding (groups B and C respectively). Mechanical and physical properties of the particleboards were tested according to European standards. The results showed that the boards in group A had lower densities, inferior mechanical properties and higher moisture content than those in groups B and C. Bark particle size had a significant effect on the mechanical properties of particleboards within each group. Additional MUF bonding and avoidance of coarse bark particles had a positive effect on mechanical properties. The thickness swelling (TS) and water absorption (WA) values of MUF-bonded boards were lower than those of boards without MUF, and greater addition of PLB produced particleboards with better water resistance. Bark particle size was not as critical for TS and WA as for mechanical properties. The overall results suggested using a bark particle size of < 2 mm for further studies.

Authors/Creators:Jiang, Wen and Adamopoulos, Stergios and Petric, Marko and Sernek, Milan and Medved, Sergej
Title:Particleboards with partially liquefied bark of different particle sizes
Series Name/Journal:Drewno-Wood
Year of publishing :2021
Volume:64
Page range:43-57
Number of Pages:15
Publisher:INST TECHNOL DREWNA
ISSN:1644-3985
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Wood Science
Keywords:bark, ethylene glycol, liquefaction, maritime pine, MUF resin, particleboard
URN:NBN:urn:nbn:se:slu:epsilon-p-113202
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113202
Additional ID:
Type of IDID
DOI10.12841/wood.1644-3985.363.10
Web of Science (WoS)000674575500003
ID Code:25111
Faculty:S - Faculty of Forest Sciences
Department:(S) > Department of Forest Biomaterials and Technology
Deposited By: SLUpub Connector
Deposited On:30 Aug 2021 19:25
Metadata Last Modified:31 Aug 2021 05:01

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