Polypropylene composites reiforced with filler materials derived from organic precursors
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Polypropylene composites were reiforced with sub-micrometer size filler materials which are fabricated from citric acid and tannic acid. The filler materials were prepared by heating mixtures of citric acid and tannic acid followed by functionalization with cardanol to improve compatibility with matrix polyproplyene. The polypropylene composites were prepared by extrusion and the enhancement of mechanical and thermal properties were confirmed. The tesile and flexural strength increased about 20% and modulus increased nearly 30%. Furthermore, the 5wt% degradation temperature of composites increased over 60 oC. This multipotent filler material can be incoporated into other polymers to fabricate composites with improved physical properties.