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Particleboards bonded by an imidazole-based adhesive system [Elektronski vir]Scharf, Alexander ...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.Source: Materials [Elektronski vir]. - ISSN 1996-1944 (Vol. 16, iss. 22, 2023, str. 1-19)Type of material - e-article ; adult, seriousPublish date - 2023Language - englishCOBISS.SI-ID - 176783875
Author
Scharf, Alexander |
Popescu, Carmen-Mihaela |
Dernegård, Henric |
Oja, Johan |
Ormondroyd, Graham Alan |
Medved, Sergej |
Sandberg, Dick |
Jones, Dennis, kemik
Topics
adhesion |
citric acid |
esterification |
ionic liquids |
wood composite |
lepljenje |
citronska kislina |
esterifikacija |
ionske tekočine |
lesni kompoziti |
lesni kompoziti
Author | Scharf, Alexander ... |
Title | Particleboards bonded by an imidazole-based adhesive system [Elektronski vir] |
Publication date | |
COBISS.SI-ID | 176783875 |
Publication version in repository | Publisher's version |
Publication licence | Creative Commons Attribution 4.0 International |
Embargo | Unidentified |
Project(s) from which the publication was funded
Title | Acronym | Project ID | Funder |
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CT WOOD | 0 | ||
Multifunktionella byggskivor av sågspån | 2022- 00998 |
Files that belong to the publication
Link |
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https://www.mdpi.com/1996-1944/16/22/7201 |
https://repozitorij.uni-lj.si/IzpisGradiva.php?id=152884 |
Costs of publication
Cost type | Total cost | Payments |
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APC – Article Processing Charge | 1246.21 € |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Scharf, Alexander | |
Popescu, Carmen-Mihaela | |
Dernegård, Henric | |
Oja, Johan | |
Ormondroyd, Graham Alan | |
Medved, Sergej | 15410 |
Sandberg, Dick | |
Jones, Dennis, kemik | 40946 |
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