Calcium Carbonate Composition Effect Upon Morphology, Water Absorption And Flexural Properties Of Hybrid Filled Kenaf And Rice Husk
The effect of calcium carbonate (CaCO3) on flexural, water absorption and morphology of kenaf/CaCO3/HDPE
and rice husk/CaCO3/HDPE hybrid composites was examined. In this study the hybrid composites with varying weight of up
to 70%, HDPE, up to 30% CaCO3and fixed 30% of natural fiber was compounded separately using twin-screw extruder at
50rpm. Water absorption of the hybrid composite increased with the addition of CaCO3 mineral filler. Hybrid composite
consist kenaf have higher ability to absorb water due to the high cellulose compared to rice husk hybrid composite. The
flexural test showed that in general, addition of up to 20% CaCO3 into both hybrids composite had increased the flexural
strength and flexural modulus.
Keywords— Hybrid Composite, Natural Fiber, Mineral Filler, Flexural Properties, Water Absorption Behaviour.