Effect of Platinum Oxide in Enhancing EMI Shielding Effectiveness of Silver Doped Polyaniline-Platinum Oxide Composites

Abstract:

In this study, we used green tea extract to prepare Silver-PANI nanocomposites and incorporated varying percentages of platinum oxide through in-situ chemical polymerization. The synthesized Ag-PANI/PtO₂ conducting polymer nanocomposites were characterized using FT-IR, XRD, and SEM analysis, which showed uniform incorporation of PtO₂ in the nanocomposites. EMI shielding effectiveness results demonstrated that the Ag-PANI/PtO₂ (10%) composite effectively shields electromagnetic interference. The EMI SE results showed that PtO₂ exhibited good absorption in the range of 2-3 GHz, indicating its conducting behaviour. Additionally, the Ag-PANI/PtO₂ (6%) and Ag-PANI/PtO₂ (10%) composites demonstrated good absorption in this range, likely due to the proper mixing of platinum oxide and silver-decorated polyaniline within the polymer matrix. Therefore, silver polyaniline decorated conducting polymer composites are a promising material for effectively shielding electromagnetic radiation in electronic devices.

• Periodical: Materials Science Forum (Volume 1099)
• Pages: 51-59
• DOI: https://doi.org/10.4028/p-cQqM10
• Online since: October 2023
• Authors: K.R. Hemantha Kumar, M. Revanasiddappa*, V. Srinivasa Murthy, Y.T. Ravikiran
• Keywords: AC Conductivity, EMI Shielding, Nanocomposites, Platinum Oxide, Polyaniline, SEM, XRD

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