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

Kamizi, Nursyafika (2017) Effect Of PLA As Bonding Agent On The Properties Of Pineapple Leaf Fibre-Starch Composite. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Recent study has shown interest on green composite material based on plant fibre compared to the synthetic material due to its abundant supply source and renewable material. It also eco-friendly and does not bring harm to the human or environment due to its biodegradable nature. Pineapple Leaf Fibre (PLF) is one of the natural fibres that has abundantly supply resource that can be found in every part of the country. Due to its higher cellulose content which making a good mechanical properties compared to other fibres, PLF should not be wasted just like that. For this study, PLF is used as the reinforcement material while starch (SH) is used as the matrix material or binder. By adding Poly-Lactic Acid (PLA) as bonding agent, the adhesion of interface between the composite are hope to increase. Several compositions ratio of PLF/(SH/PLA) composites were tested in this project which are 50PLF/(50SH/PLA), 60PLF/(40SH/PLA) and 70PLF/(30SH/PLA). The fibre has gone through an alkaline treatment to increase the strength of the fibre. All the samples have gone through four different tests such as flexural test, hardness test, density test and macrostructure analysis to determine their mechanical properties. Based on the results, the sample with composition of 60PLF/(40SH/PLA) has the highest result for flexural stress which is 36.19 MPa. PLF with the composition 70PLF/(30SH/PLA) has the highest result in the hardness which is 60.7. In term of density measurement, the composition that shows higher result is 50PLF/(50SH/PLA) with the value of 1.228 g/cm3.

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