Production and evaluation of particleboards made of coconut fibers, pine and eucalyptus using bicomponent polyurethane-castor oil resin

• Autor(a) principal: Rodrigo Andraus Bispo
• Data de Publicação: 2022
• Outros Autores: Tulio Hallak Panzera, Francisco Antonio Rocco Lahr, André Luis Christoforo, Mariana Ferreira Trevisan, Sérgio Augusto Mello da Silva, Vinicius Borges de Moura Aquino, Raisse Layane de Paula Saraiva, Felipe Nascimento Arroyo, Julio Cesar Molina, Eduardo Chahud, Luiz Antônio Melgaço Nunes Branco
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFMG
• Texto Completo: https://doi.org/10.15376/biores.17.3.3944-3951; http://hdl.handle.net/1843/60750; https://orcid.org/0000-0003-3168-7055
• topic: Particleboards; Cocos nucifera; Castor oil based polyurethane resin; Physico-mechanical properties; Madeira; Chapa de madeira aglomerada

This research examined the influence of the compositions between coconut fiber (Cocos nucifera) and wood particles (Pinus taeda L. and Eucalyptus saligna) on physico-mechanical properties of homogeneous particleboards. The exploratory study was carried out under Tukey’s contrast test of means, at 5% significance level, with the following compositions: 100% coconut fiber (F100 P0 E0); 50% coconut fiber, 25% pine particles, and 25% eucalyptus particles (F50 P25 E25); and 50% of pine particles and 50% of eucalyptus particles (F0 P50 E50), with particle moisture content between 0% to 2% and 10%, in mass, of polyurethane-castor oil (PU-Castor) resin. Three panels were produced for each composition. The physico-mechanical properties such as density, moisture content, swelling in thickness after 24 h of immersion in water, perpendicular tensile strength, static bending strength, and modulus of elasticity were evaluated using standard methods. The results obtained indicated the potential for using coconut fiber for the production of homogeneous particleboards in view of the minimum criteria required by the normative documents, with emphasis on the physical property of swelling after 24 hours, which obtained a statistically equivalent average relative to the treatment that contained only wood particles.