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.