Enhancing dimensional stability of oriented strand composites within biorefinery
| Autor: | Juan Jacobo Paredes Heller, Stephen M. Shaler, Russell Edgar, Zeki Candan |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Absorption of water Materials science Materials Science (miscellaneous) Manufactures Formaldehyde 01 natural sciences TS1-2301 Industrial and Manufacturing Engineering phenol formaldehyde adhesive chemistry.chemical_compound water absorption lcsh:Manufactures 010608 biotechnology Phenol formaldehyde resin Chemical Engineering (miscellaneous) Phenol Hot water extraction lcsh:Forestry Composite material polymethylene diphenyl diisocyanate adhesive 040101 forestry chemistry.chemical_classification Extraction (chemistry) technology industry and agriculture Forestry 04 agricultural and veterinary sciences SD1-669.5 wood composites Equilibrium moisture content Swell chemistry lcsh:SD1-669.5 0401 agriculture forestry and fisheries hot water extraction lcsh:TS1-2301 |
| Zdroj: | Maderas: Ciencia y Tecnología, Vol 19, Iss 3, Pp 387-398 (2017) Maderas. Ciencia y tecnología v.19 n.3 2017 SciELO Chile CONICYT Chile instacron:CONICYT Maderas. Ciencia y tecnología, Volume: 19, Issue: 3, Pages: 387-398, Published: 16 MAY 2017 |
| ISSN: | 0718-221X |
| DOI: | 10.4067/s0718-221x2017005000033 |
| Popis: | The objective of this study was to investigate the effects of hot water extraction process on the dimensional stability of oriented strand composites. Aspen wood strands were extracted using various severity factor levels. Phenol formaldehyde and polymethylene diphenyl diisocyanate resins were used for production of the oriented strandboard panels. Six panel groups were produced from the extracted or unextracted aspen wood strands. The dimensional stability of the material was evaluated by measures of equilibrium moisture content and thickness swell and water absorption after soaking in water for 2 hours and 24 hours. Results obtained in this study showed that thickness swell and water absorption values significantly decreased with the hot water extraction process, with the thickness swell of phenol formaldehyde bonded panels decreasing 70% after 2 hours soaking. The panels with polymethylene diphenyl diisocyanate resin exhibited lower thickness swell and water absorption relative to the panels prepared with phenol formaldehyde resin. Equilibrium moisture content values of the panels bonded with both phenol formaldehyde and polymethylene diphenyl diisocyanate resin decreased with the extraction process. The findings of this work indicate that hot water extraction process could be effectively used to produce oriented strand composites having an enhanced dimensional stability property. |
| Databáze: | OpenAIRE |
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