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DYNA
versión impresa ISSN 0012-7353versión On-line ISSN 2346-2183
Resumen
CHALAPUD, Mayra C. et al. Biobased particleboards from rice husk and soy protein concentrate: evaluation of flexural properties and dimensional stability under indoor environmental conditions. Dyna rev.fac.nac.minas [online]. 2023, vol.90, n.226, pp.156-162. Epub 13-Feb-2024. ISSN 0012-7353. https://doi.org/10.15446/dyna.v90n226.106584.
Biobased particleboards from rice husk (RH) and soybean protein concentrate (SPC) based adhesive were evaluated over 180 days under indoor conditions. Two alternatives were evaluated: the incorporation of carvacrol to the SPC based adhesive, as a natural preservative, and the coating of the RH-SPC based particleboards with a polyurethane lacquer. Coated panels showed the lowest thickness swelling and water absorption at 2 and 24 h of immersion. The modulus of rupture (MOR) increased for the coated panels, while the elasticity modulus (MOE) was the same for all formulations. MOR and MOE obtained for all particleboards evaluated over time met the requirements established by ANSI Standard A208.1 along the 180 days of study. Results showed that particleboard have good physical and mechanical stability under indoor environmental conditions, presenting a good performance at least up to six months.
Palabras clave : particleboard; rice husk; coating; mechanical properties; renewable resources; biobased adhesive; storage.