Thermally Reduced Graphene Nanosheets/Polymer Blend Composites for Efficient Electromagnetic Interference Shielding

In this study we investigate the electromagnetic interference (EMI) shielding behaviour of PET/PP blend in presence of thermally reduced graphene (TRG). The blend exhibits co-continuous morphology and TRG nanosheets are thermodynamically driven into the PET polymer leading to a double percolated structure which dramatically reduces the percolation threshold. The real (ε ) and imaginary (ε ) permittivity increase dramatically with addition of TRG. In presence of 0.66 vol% TRG the EMI shielding is higher than 30 dB. This increment of the EMI shielding is attributed mainly to the conductive network entire blend formed by double percolated structure, which can effectively improve the electrical properties of composites. Furthermore, the TRG nanosheets interact with the incident EM radiation and leads to the high shielding