PEER-REVIEWED ARTICLE bioresources.com Nasser et al. (2020). “Particleboard formulation,” BioResources 15(2), 2163-2170. 2163 Mechanical Analysis of Bamboo and Agro-industrial Residue One-layer Particleboard Sílvia M. Nasser, a Elen A. M. Morales, b, * Luiz E. R. Pereira, a Rafael A. P. Eugenio, a João C. Biazzon, a Mauri P. Lima, Jr., a Marcus A. P. Bueno, a Andreia Archangelo, a Valter R. B. Celestino, a Hanilton M. Nasser, a Larissa G. Dias, a Marcelo R. Munhoz, a Gustavo J. C. Gonçalves, a Ricardo Breganon, c and Ivaldo D. Valarelli a A high-density particleboard composed of peanut shells (Arachis hypogaea L.), an agro-industrial residue, and bamboo wastes of the species Dendrocalamus giganteus (branches and apical part), bonded with a two-component polyurethane resin based on castor oil ( Ricinus communis L.) in the proportion of 12% of the particleboard mass, was produced. Four types of specimens were prepared according to the percentage of peanut shells: 0%, 10%, 20%, and 30%. Mechanical characteristics were evaluated through the flexural strength tests for modulus of rupture, modulus of elasticity, perpendicular traction, and screw pull resistance. The particleboard reached an average density of 917.2 kg/m 3 , meaning that it could be classified as high-density particleboard. The results of the mechanical tests indicated that the specimens containing a mixture in the proportion of 90% bamboo and 10% peanut hull presented the best mechanical strength. The experiment produced particleboards with a satisfactory mechanical physical performance that met the standards ABNT NBR 14.810-2 and ANSI A208- 1, supporting the use of the peanut shell residue in the manufacture of particleboards to be used in internal environments and allowing the applicability of this residue through additional value. Keywords: Sustainability; Agro-industrial waste; Particleboards; Mechanical strength; Bamboo Contact information: a: Mechanical Engineering Department, UNESP – Unesp – Univ Estadual Paulista, Avenida Luiz Edmundo Carrijo Coube, Bauru, São Paulo 14-01 Brazil; b: Wood Industrial Engineering Department, UNESP – Univ Estadual Paulista, Rua Geraldo Alckmin, Itapeva, São Paulo 519 Brazil; c: Federal Institute of Paraná, Avenida Dr. Tito, Jacarezinho, Paraná 801 Brazil; * Corresponding author: silvianasser@gmail.com INTRODUCTION The current consumer society encourages the indiscriminate exploitation of the planet’s natural resources beyond its renewal limit, and therefore more waste than nature can absorb is released into the environment. Thus, consequences arise such as climate change, extinction of plant and animal species, scarcity of natural resources, and pollution (Iwakiri 2005). Today, society experiences the benefits of scientific and technological advances with the advent of the industrial revolution that have intensified over the last two centuries. Related to this development is the damage caused to the environment and the various forms of pollution. Therefore, the environmental issue becomes of international scope, leading to the awareness of environmental preservation and the search for mechanisms to prevent further environmental damage. Rethinking the concepts and investing in new alternatives