Biobased particleboards from rice husk and soy protein concentrate: evaluation of flexural properties and dimensional stability under indoor environmental conditions

CHALAPUD M.; E.M. CIANNAMEA; J. F. MARTUCCI; R.A. RUSECKAITE; P.M. STEFANI

DYNA

UNIV NAC COLOMBIA

Lugar: Medellín; Año: 2023

0012-7353

Biobased particleboards from rice husk (RH) and soybean protein concentrate (SPC) based adhesive were evaluated over 180 days underindoor conditions. Two alternatives were evaluated: the incorporation of carvacrol to the SPC based adhesive, as a natural preservative, and thecoating of the RH-SPC based particleboards with a polyurethane lacquer. Coated panels showed the lowest thickness swelling and waterabsorption 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 byANSI Standard A208.1 along the 180 days of study. Results showed that particleboard have good physical and mechanical stability underindoor environmental conditions, presenting a good performance at least up to six months.