Investigation of Pore Size Distribution by Mercury Intrusion Porosimetry (MIP) Technique Applied on Different OSB Panels

Fabiane Salles Ferro, Felipe Nascimento Arroyo, Edson Fernando Castanheira Rodrigues, Iuri Fazolin Fraga, João Paulo Boff Almeida, Heloiza Candeia Ruthes, Vinícius Borges de Moura Aquino, Elen Aparecida Martines Morales, Matheus Henrique Morato de Moraes, Francisco Antônio Rocco Lahr, André Luis Christoforo


Mercury intrusion porosimetry (MIP) is a technique used to characterize the pore size distribution and resin penetration in lignocellulosic materials, such as oriented strand board specimens (OSB), a multilayer panel utilized in structural applications. The method is based on the isostatic injection, under very high pressure, of a non-wetting fluid (mercury) into the porous material to determine parameters such as pore size distribution and percentage of porosity of the specimens. In this study, five different OSB were analyzed; they contained different wood species, resin type, and resin content. The panels manufactured with castor oil polyurethane resin showed porosity values in the range of 54.7 and 27.8%. This was a promising result compared with those obtained for panels made with phenolic resins, which are currently commercialized in Brazil.


Mercury porosimetry; Oriented strand board; Castor oil polyurethane resin

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