Dimensional Stability and Mechanical Properties of Bio-based Composites Produced from Hydro-thermal Treated Wheat Straw
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Date
2021
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
North Carolina State Univ Dept Wood & Paper Sci
Access Rights
info:eu-repo/semantics/openAccess
Abstract
Bio-composites were produced from untreated (UT) and hydro-thermally stability and mechanical properties were investigated. The HTT treatment consisted of subjecting the WS particles to a steam explosion process for 8 min at 180 degrees C. The HTT and UT WS particles were mixed with the wood particles at 10, 20, 30, and 40% ratios. The physical properties, including density, water absorption (WA), and thickness swelling (TS), were determined for the bio-based composites. The mechanical properties evaluated included the modulus of rupture, modulus of elasticity, and internal bond strength. Statistical analyses showed that the hydro-thermal treatment and the WS ratio had significant effects on the dimensional stability and mechanical properties of the bio-composites. The WA of the composites after 2-h and 24-h rose significantly when the HTT WS particle ratio was increased from 10 to 40%. The 2-h and 24-h WA values of HTT10 were 6.3% and 5.3% lower than those of UT-10, respectively. Improvements in the 2-h TS value were achieved by the HTT WS particles at the 10% ratio, and in the 24-h TS value at the 10 and 40% ratios. The mechanical properties of the composites were higher in the HTT group, but decreased in both the UT and HTT groups as the WS ratio increased.
Description
Keywords
Hydro-Thermal Treatment; Composite; Wheat Stalks; Dimensional Stability; Mechanical Properties, Helianthus-Annuus L.; Raw-Material; Physical-Properties; Needle Litter; Bonded Reed; Particleboard; Wood; Manufacture; Suitability; Husk
Journal or Series
Bioresources
WoS Q Value
Q2
Scopus Q Value
Q3
Volume
16
Issue
4
