Low formaldehyde emission particleboard panels realized through a new acrylic binder

Abstract

ABSTRACT:The effectiveness of acrylic resins as low formaldehyde emission binders for particleboard production was explored. In particular, a multifunctional methacrylic monomer, ethoxylated bisphenol A dimethacrylate, classified as nonskin and eyes irritant, was selected and tested. In comparison panels realized with classic ureaformaldehyde (UF) binder were also prepared. No significant differences were found through the morpholocigal analysis of samples prepared with the two different binders. Moreover, particleboard panels realized with the acrylic binder showed better mechanical properties and lower water absorption and thickness swelling in comparison with corresponding panels realized with the UF binders. Furthermore, the replacement of the UF with the acrylic binder did not affect thermal insulation properties of the panels. Formaldehyde release tests revealed that particleboard panels obtained by applying the acrylic binder can be classified as E1 following the European classification and even F**** following the stricter Japanese classification.

Utilization of Cellulose Nanofibrils as a Binder for Particleboard Manufacture

“…Over the past years, several approaches have been taken to reduce formaldehyde emissions from wood-based panels. This includes using liquefied wood (LW), wood meal of black poplar liquefied with a mixture of glycerol and sulfuric acid by heating, for the modification of phenolformaldehyde (Antonovic et al 2010), organosolv lignin dispersion to partially replace the solids content in a liquid phenol-formaldehyde (Seyno et al 1996), hydrogen peroxide as a catalyst in the hardening process of urea-formaldehyde (Elbert 1995), low formaldehyde emission acrylic resin (Amazio et al 2011), and pulp and paper secondary sludge as a ureaformaldehyde co-adhesive (Xing et al 2013). A number of studies focused on the replacement of formaldehyde-based resins with other binders such as epoxidized vegetable oils (Sivasubramanian et al 2009;Tasooji et al 2010), soy-based adhesives (Prasittisopin and Li 2010), tannins and lignin from pulp mill residues (Bertaud et al 2012), and polymeric diphenylmethane diisocyanate (pMDI) (Tongboon et al 2002).…”

Monocotyledons in Particleboard Production: Adhesives, Additives, and Surface Modification of Reed Canary Grass

“…The thermoplastic acrylic polymer can be transformed into a thermosetting film adhesive (Gouri et al 2001). Acrylic resin with dibenzoylperoxide as catalyst provides a multifunctional methacrylic monomer (ethoxylated bisphenol A dimethacrylate) which was successfully tested on particleboards (Amazio et al 2011). The addition of an acrylic emulsion generally leads to lower formaldehyde emissions and lower swelling of the boards than a urea formaldehyde adhesive (Amazio et al 2011;Dziurka and Łȩcka 2004).…”

“…Acrylic resin with dibenzoylperoxide as catalyst provides a multifunctional methacrylic monomer (ethoxylated bisphenol A dimethacrylate) which was successfully tested on particleboards (Amazio et al 2011). The addition of an acrylic emulsion generally leads to lower formaldehyde emissions and lower swelling of the boards than a urea formaldehyde adhesive (Amazio et al 2011;Dziurka and Łȩcka 2004). Acrylated epoxidised soy oil (AESO) was successfully used as adhesive to produce particleboards of wheat straw (Shakeri et al 2010;Tasooji et al 2010).…”

Effect of Veneer-Drying Temperature on Selected Properties and Formaldehyde Emission of Birch Plywood

“…Methods for reducing FE in wood-composite materials have been widely discussed over the years, and many of them have been described in [3]. However, a decrease in the formaldehyde content of the resins may impair the bonding strength, and adhesives without formaldehyde can increase the cost of the plywood [4,5].…”