Abstract
Epoxy bio composite was prepared using areca fibre, nano-silica and toughened by neem oil bio blender (anti-microbial content) for various engineering applications. The principal aim of this research work is to reveal the need and importance of adding nano-silica particles (a natural antibacterial substance) into neem oil when it is blended with epoxy resin to form a bio-composite. The nano-silica particle and areca fibre have been surface-treated by an amino silane 3-Aminopropyltriethoxysilane (APTES) for better dispersion on neem-epoxy blended matrix medium. The composites were prepared using hand layup method with post-cured at 120 °C in a hot oven. The composites have been tested in accordance with ASTM standards. The visco-elastic analysis shows that the storage modulus of 2 vol.% of nano-silica particles in 30 vol.% of areca-reinforced epoxy-neem composite found to be higher up to 9.8 GPa at room temperature and 1.8 GPa at 120 °C. The loss factor also found to be higher at the glass transition temperature. The differential scanning calorimetry results showed that the composites contain 2 vol.% of nano-silica particles retains the glass transition (Tg) at higher neem oil blending (20 vol.%) as higher than epoxy resin. The antimicrobial behaviour of neem-epoxy composite was increased by the addition of 2 vol.% of nano-silica. Finally, the electrical insulation studies revealed that the composites built with non-polar neem oil and partial polar nano-silica not altered the electrical resistance much. These antimicrobial enhanced and thermo-mechanically strengthened epoxy bio composites could be used as food storage containers, medical components carrier and domestic appliance manufacturing.
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Ben Samuel, J., Julyes Jaisingh, S., Sivakumar, K. et al. Visco-Elastic, Thermal, Antimicrobial and Dielectric Behaviour of Areca Fibre-Reinforced Nano-silica and Neem Oil-Toughened Epoxy Resin Bio Composite. Silicon 13, 1703–1712 (2021). https://doi.org/10.1007/s12633-020-00569-0
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DOI: https://doi.org/10.1007/s12633-020-00569-0