Using miriti petiole to produce particleboards

Abstract This study aimed to use the petiole residues of miriti to partially replace pine wood and evaluate the effects of this incorporation on the physical and mechanical properties of the particleboards. Panels were produced with 0, 25, 50, and 75% of miriti in partial replacement of wood and 12% of urea-formaldehyde adhesive. The chemical-physical properties of miriti residues showed potential particleboard production as they were similar to those of pinewood. For the physical properties, the panels were classified as low density. There was an increase in the compression ratio and, consequently, in the hygroscopicity . For the mechanical properties, it was observed that the modulus of elasticity (MOE) and modulus of rupture (MOR) did not show any statistical differences. For perpendicular traction (PT), there was a significant reduction in 50%. Considering a general analysis of the physical and mechanical properties, up to 40% of mirti can be substituted, as in this situation they meet the properties mentioned in CS-236-66, except for PT for commercialization of the panels.摘要：本研究旨在利用莫里蒂棕榈（miriti）的叶柄残余物部分替代松木，并评估该掺配方案对刨花板物理与力学性能的影响。实验以0%、25%、50%及75%的莫里蒂棕榈替代比例部分掺配松木，并添加12%的脲醛胶制备板材。莫里蒂棕榈残余物的化学-物理性能表明其具备刨花板制备的潜力，相关性能与松木相近。物理性能层面，所制备板材被归类为低密度板材；压缩率随替代比例提升而升高，进而导致吸湿性增强。力学性能方面，弹性模量（MOE）与抗弯强度（MOR）未呈现统计学显著性差异；垂直抗拉强度（PT）则出现了50%的显著下降。综合分析各项物理与力学性能，莫里蒂棕榈的替代比例最高可达40%：此时板材除垂直抗拉性能外，其余各项性能均符合CS-236-66标准的相关要求，仅垂直抗拉性能无法满足板材商业化生产的性能需求。