Abstract Synthesis of polypyrrole (PPy) / graphite (G) composites via chemical oxidation polymerization method is reported. Synthesized composites were studied for its structural, optical and electrical properties. Structural and morphological studies were performed using powder X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy and the effect of graphite on the properties of PPy is elaborated in detail. Further, the electrical measurements were carried using dielectric analyzer. Dielectric behavior of the composites was also compared with the PPy and graphite and confirmed the dependency of graphite on PPy/graphite nanocomposites. The EMI shielding response of PPy/graphite nanocomposites were measured in the microwave frequency range from 12 to 18 GHz (Ku band), of practical relevance. The observed effective electrical and EMI shielding properties highlights the prospects of multifunctional applications of these PPy/graphite nanocomposites.

中文翻译：

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将石墨掺入铁装饰聚吡咯中，用于电介质和 EMI 屏蔽应用

摘要 报道了通过化学氧化聚合法合成聚吡咯 (PPy) / 石墨 (G) 复合材料。研究了合成复合材料的结构、光学和电学性能。使用粉末 X 射线衍射、傅里叶变换红外光谱、扫描电子显微镜进行结构和形态研究，并详细阐述了石墨对 PPy 性能的影响。此外，电测量是使用介电分析仪进行的。还将复合材料的介电行为与 PPy 和石墨进行了比较，并证实了石墨对 PPy/石墨纳米复合材料的依赖性。在 12 至 18 GHz（Ku 波段）的微波频率范围内测量了 PPy/石墨纳米复合材料的 EMI 屏蔽响应，具有实际意义。