Synthesized reduce Graphene Oxide (rGO) filled Polyetherimide based nanocomposites for EMI Shielding applications

In this present work, we have studied the Reduced Graphene Oxide (rGO) was synthesized by Hummers method. The synthesized different weight % of rGO (0.5 to 2.5) filled Polyetherimde (PEI) film nanocomposites were prepared with a solution based process. Reduced graphene oxide confirmation significance observed from FTIR spectra and morphology by AFM, TEM also homogeneous dispersion, distribution of rGO in PEI matrix by SEM study. The electrical conductivity of rGO filled PEI film/nanocomposites were measured by I-V test and Electromagnetic Interference (EMI) Shielding effectiveness (SE) were measured by (Co-axial cable line method) X-band waveguide composites in the frequency range of 8-12 GHz (X-band range). It was observed that SE of the composites is frequency dependent, and it increases with the increasing frequency. The Electrical conductivity and SE also increase with the increasing filler (rGO) loading in PEI matrix. High performance polymer like PEI nanocomposites/film thermo-mechanical properties were studied by DMA and thermal properties were characterized by TGA analysis.. It was observed that thermo-mechanical properties improved when increasing the filler loading. The nanocomposites based matrices with 2.5 wt % loading of rGO exhibited shielding levels at 8 to 12 GHz between 22-26 dB in comparison to the neat polymer which showed value in the range of 1-3 dB. (C) 2017 Elsevier Ltd. All rights reserved. Selection and/or Peer-review under responsibility of International Conference on Functional Nano-Materials, 2016.