Influence of Physical and Chemical Components on the Physical-Mechanical Properties of Ten Brazilian Wood Species

• Autor(a) principal: Duarte,Bárbara Branquinho
• Data de Publicação: 2020
• Outros Autores: Lahr,Francisco Antonio Rocco, Curvelo,Antonio Aprigio da Silva, Christoforo,André Luis
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Materials research (São Carlos. Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000200206
• topic: : Physical and mechanical properties; density; porosity; cellulose; hemicellulose; lignin; ash

Abstract Wood offers a good combination of high strength and low density, but its complete characterization takes a long time. This study aimed to correlate apparent density, chemical component and porosity parameters with the physical and mechanical properties of the wood as an alternative route to reduce the time spent proposing equations to estimate each mechanical property. Ten tropical wood species were characterized in accordance with Brazilian Standards and chemical components were determined by the Klason method, and the porosity using mercury intrusion. Multivariate regression models were applied to the results of each species to find the relationships. Good results were obtained, such as the coefficient of determination and the analysis of variance, which indicated that the equations for 10 out of the 16 properties are significant. Therefore, the apparent density, chemical component and porosity parameters used reduce the time intervals much lower than the time test stipulated by the standard.