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( S. Suhasman ),( A D Yunianti ),( Agussalim ) 韓國木材工學會 2017 한국목재공학회 학술발표논문집 Vol.2017 No.1
Nowadays, the established technology in plywood industries for producing plywood is still using adhesive as veneer bonding agent. Utilization of the adhesive has several of weaknesses such as containing formaldehyde compound and using the unrenewable raw material. The purpose of this research was to develop a novel technique to produce plywood without involving adhesive as a binder. The oxidized bark powder of Acacia mangium was utilized as a binder to substitute the adhesive. Bark powder was oxidized by using hydrogen peroxide on four levels (5%, 10%, 15%, 20%) and the catalyst. The result showed that utilization of oxidized bark powder was able to be applied in producing resinless plywood. The bonding strength of the plywood fulfills National Indonesian Standard (SNI) No 01-5008.2-2000 where min. 7 kg/cm² as the requirement. After immersing the plywood in hot water (70°C) for 2 hours and drying in the oven (60°C) for 3 hours, the wood failure test showed a high value, namely 85.84% when 15% hydrogen peroxyde and 5% catalyst was applied. These facts indicated that the bonding and the water resistant of the plywood were relatively high. It tends that the technology for producing resinless plywood is potential to be developed.
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