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- 저자 : ( Agus Sudibyo Jati ) (검색결과 1 건)
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Properties of Citric Acid-bonded Composite Board from Elephant Dung Fibers
( Ragil Widyorini ),( Greitta Kusuma Dewi ),( Widyanto Dwi Nugroho ),( Tibertius Agus Prayitno ),( Agus Sudibyo Jati ),( Muhammad Nanang Tejolaksono ) 한국목재공학회 2018 목재공학 Vol.46 No.2
An elephant digests only around 30~45% of what it consumes; therefore the undigested material mainly passes as intact fibres. Elephant food is usually composed of grass, leaves, twigs, bark, fruit and seed pods. This research aimed to utilize the elephant dung fibers as material for composite board and citric acid as a bonding agent. Citric acid contents in this research were set at 0 wt% (binderless composite board), 10 wt%, 20 wt%, and 30 wt% based on dry weight particles, while the target density was set at 0.8 g/cm<sup>3</sup>. Pressing temperatures were set at 180℃ and 200℃ with the pressing time was 10 minutes. Physical and mechanical properties tests were then performed according to Japanese Industrial Standard A 5905. The result showed that elephant dung fibers could be used as potential materials for composite board. Addition of citric acid and pressing temperature significantly increased the quality of composite board. Infrared analysis indicated that the presence of ester linkages much higher with the increasing of citric acid content and pressing temperature. The optimum properties of composite board made from elephant dung fibers could be achieved at pressing temperature of 200℃ and a citric acid content of 20 wt%.
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