Effect Of Bonding Agent On The Properties Of Pineapple Leaf Fibre Starch Composite

Mohd Shobi, Asyraf Kasyidi (2017) Effect Of Bonding Agent On The Properties Of Pineapple Leaf Fibre Starch Composite. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Nowadays, the usage of natural fiber to produce biodegradable composites has gained increasing interest due to their eco-friendly properties. Biodegradable composite can be defined as composite material or the combination between matrix and reinforcement used both materials from natural resources. Pineapple leaf fibre (PLF) is a waste product of pineapple cultivation. This fibre has potential as reinforcement fillers in thermosets, thermoplastics, elastomers or biodegradable matrix and exhibit excellent mechanical properties. One of biodegradable matrix is the mixture of starch (SH) and glycerol (GLY). The ratio of GLY has been vary from 10 up to 30% from total weight of mixture SH/GLY. The tensile strength of this mixture had been determine and the mixture of 70:30 (SH:GLY) shown the highest value of 0.734 MPa. Therefore, this matrix has been selected to produce composite of PLF/(SH/GLY) and the mechanical properties of this composite have been studied. The objectives in this study were to investigate the effect of fibre loading, addition of GLY as bonding agent and fibre treatment in PLF/(SH/GLY) composite by comparing the mechanical properties. The composite compositions are 50PLF/50(SH/GLY), 60PLF/40(SH/GLY) and 70PLF/30(SH/GLY) and has been fabricated through hot compression moulding in order to form composite sheet. The PLF fiber was treated used Sodium Hydroxide (NaOH) as treatment agent. The mechanical properties of the composite materials were analyzed through the tensile test (ASTM D 3039/D 3039 M-00), hardness test, density measurement and macrostructure analysis. All of the tests basically show improvement. Tensile strength shows increment of the value of 27.686MPa with the increasing of fibre loading. The same pattern also happen to the hardness and density measurement shows increment value of 55.0 in shore-D and 1.332g/cm3 of the result with the more composition of fibre in the composites. Therefore it can be concluded, the results showed 70PLF/30(SH/GLY) composite filled with treated fibre had higher in tensile strength, hardness and density.

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