Physical performance of particleboards using Castor oil-based adhesive

Abstract

Reconstituted wood panels are widely used in various branches of the wood industry, such as in the furniture sectors and various segments of urban and rural construction. In Brazil, agricultural and forestry residues are abundantly generated, making feasible the study, development and application of alternative and sustainable materials, produced from the use of these wastes. The aim of this study was to produce high-density homogenous panels with wood residues of Pinus elliottii and oat hulls (Avena sativa), pressed with two types of adhesive, castor oil-based polyurethane and melamine formaldehyde, and to evaluate the physical performance of these panels. The physical performance of the panels was evaluated based on the ABNT NBR 14810: 2006, ANSI A208.1: 1999 and BS EN 312: 2003 standards. Analysis of variance (ANOVA) was performed to test the influence of the factors percentage of oat hull, percentage of adhesive and type of adhesive, and the interactions between these factors on the physical properties of the panels. The results indicated physical properties, in some treatments superior to the requirements stipulated by the consulted standards. It was concluded that the panels produced with the castor oil-based polyurethane adhesive showed better physical performance when compared with the panels produced with the melamine formaldehyde adhesive.

Castor oil based polyurethane adhesive content on OSSB produced with soybean straw

“…The OSSB density increased with higher amounts of polyurethane adhesive content, which can also be observed in Figure 3, where the composition of 15% shows SbS to be more compacted. Bertolini et al (2013) and Varanda et al (2018) studied wood composites produced with polyurethane obtaining higher densities (from 800 to 1100 kg . m -3 ).…”

“…Polyurethane is another type of formaldehyde-free adhesive (polyurethane based) that has a wide range of applications in industry (TANG et al, 2008). This binder has been substantially investigated as a replacement of conventional adhesives in wood-based and other lignocellulosic composites (MERLINI;SOLDI;BARRA, 2011;FIORELLI et al, 2012FIORELLI et al, , 2013BERTOLINI et al, 2013;VALARELLI et al, 2014;CHEN;TAI, 2018;NASCIMENTO et al, 2018;VARANDA et al, 2018;FERRO et al, 2019;MACEDO et al, 2019;SHIROSAKI et al, 2019). The use of castor oil polyurethane adhesive in the composition SbS OSSB in this paper is justified due the abundance of the Ricinus communis L. plant in Brazil, whose seeds are used for the production of the resin (CANGEMI et al, 2006).…”

Acid Hydrolysis of Lignocellulosic Materials for The Production of Second Generation Ethanol

“…Brazil is one of the largest generators of agricultural and forestry residues in the world, being one of the largest fruit producers, consequently, large amounts of lignocellulosic biomass are obtained, making it viable to use these renewable and sustainable materials as an energy source [1].…”