Low-Cost Electromagnetic Shielding Materials Based on Polypyrrole-Bio Waste Composites 2020-01-0226

There is a crucial need for Electromagnetic interference shielding in many of the applications in this digital world with low cost and high efficient shielding materials. Electrically conducting heterocyclic polymer polypyrrole has found its application as EMI shielding materials due to its conducting property. Electrically conducting polypyrrole (PPy) coated on coconut fibres (coir) with different morphology, were prepared through in-situ chemical polymerization of PPy using a strong oxidizing agent like ammonium persulfate. The synthesized PPy on coconut fibre were characterized using UV- Visible spectrophotometer (UV-VIS) and Fourier transform infrared spectroscopy (FTIR) which confirmed the product formation. The morphology was done using Scanning electron Microscopy (SEM). Thermal studies were performed by Thermo Gravimetric analysis (TGA). The AC conductivity of the obtained material was calculated successfully.