Karakteristik Oriented Strand Board Hibrida Kayu Sengon dan Bambu Betung pada Berbagai Kerapatan Papan

Abstract

Oriented Strand Board (OSB) is a potential composite product to be developed. The combination of wood strand and bamboo strand as hybrid OSB raw materials is expected to produce better OSB characteristics. The density value affects the quality of OSB, so it is necessary to know the optimum density value of hybrid OSB. This study aims to analyze the characteristics of hybrid OSB Sengon wood (Paraserianthes falcataria) and Betung bamboo (Dendrocalamus asper) on various board densities. Sengon wood strand and Betung bamboo strand were treated by steam at 126 ºC temperature and under 0.14 MPa pressure for an hour. Betung bamboo strands were then washed with a solution of 1% NaOH. Hybrid Oriented strand boards were made with a size of (30x30x0.9) cm3 and 0.6 g.cm-3, 0.65 g.cm-3, dan 0.7 g.cm-3 target densities using 10% of phenol formaldehyde adhesive. Sengon wood strands were used in the face and back layers while Betung bamboo strands were used in the core layer with comparison of 25:50:25 (face:core:back). Determination of hybrid OSB Sengon wood and Betung bamboo characteristics were referred to JIS A 5908: 2003 about particleboard and the values was compared to CSA 0437.0 (Grade O-1) standards about OSB design manual. The results showed that the density affects the physical and mechanical properties values of hybrid OSB. The physical and mechanical properties were improved with increasing the board density. OSB with density 0.65 g.cm-3 and 0.7 g.cm-3 have good physical and mechanical properties based on CSA 0437.0 (Grade O-1) standard.