Evaluations of some properties of exterior particleboard made from oil palm biomass

Abstract

This study investigated some physical and mechanical properties of experimental particleboard panels manufactured from different parts of oil palm including bark, leaves, fronds, and trunk consisting of mid-part and core-part using phenol formaldehyde adhesive. Two types of panels with target densities of 0.80 and 1.0 g/cm 3 were manufactured using pressure levels of 5 and 12 MPa, respectively. Both types of panels were pressed at a temperature of 180 C for 20 min. The findings indicated density and pressure level had an influence on the overall properties of the panels. Samples from the core-part had the highest modulus of rupture (MOR) values followed by those panels made from fronds and bark particles. Such samples satisfied MOR characteristics for particleboard type 13 listed in the Japanese Standard. Similarly, panels made from mid-part and leaves also showed satisfactory MOR values for particleboard type 8 based on the same standard. All panels met the IB strength requirement for type 8 except panels made from leaves made at a target density of 1.0 g/cm 3 pressed at 12 MPa. None of the samples satisfied the thickness swelling requirements. The scanning electron microscopy and Fourier transform infrared spectroscopy study indicated positive effect of the resin on interfacial bonding between the particles. Different parts of oil palm may have potential to manufacture exterior particleboard panels with acceptable strength properties. Dimensional properties of the samples need to be enhanced by using different chemicals such as wax or application of various treatments including heat treatment.

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