The effect of different tree section on the physical and chemical properties of rubberwood (Hevea brasiliensis)

The use of wood-based products is determined by the inherent physical and chemical characteristics. This study has specifically investigated the species Hevea brasiliensis, where the tree trunk is divided into three parts of different heights (top, middle and bottom) and wood disc samples are collected from each part to investigate Near Pith (NB), Intermediate (I) and Near Bark (NB) is in the evaluation of physical and chemical properties. Samples were used for physical and chemical analysis according to the standards set by the Pulp and Paper Technical Association Industry USA (TAPPI) T 208 om-94 (1996). The statistical analysis of this study shows that both tree section and radial position have a significant influence on physical properties. The specific gravity of rubberwood is high at the bottom, followed by the middle and top. The moisture content of this tree species increases progressively from bottom to top. Likewise, the chemical composition is relatively consistent throughout its height in terms of moisture content, extractives, holocellulose, cellulose, hemicellulose, and lignin. However, the degree of variation between the top, middle and bottom can be specified. Finally, a survey was conducted to ascertain the exact physical and chemical properties of the various tree species and components. This information is then used to distinguish parts of the tree that can be used efficiently for various objective.