ABSTRACT Conducting polyaniline (PANI)/vanadium pentoxide (V2O5) nanocomposites have been synthesized by interfacial polymerization technique. The composites have been characterized by X-ray diffraction (XRD), Fourier transforms infrared (FTIR) spectroscopy, and scanning electron microscopy (SEM). The electrical conductivity (σac) and dielectric measurements have been carried out in the frequency range of 50 Hz to 1 MHz at ordinary lab temperature. The dielectric constant of the composites has been increased to a very high-value of 3.75×105 at lower frequency (1 kHz) for 15 wt% concentration of V2O5 in PANI. The electromagnetic shielding behavior of the composites has been investigated in the frequency range 12-18 GHz (Ku-band) of the microwave region. The shielding results demonstrate the synergistic effect of the composite phases with average shielding effectiveness (SE) values in the range of ∼20 dB (

中文翻译：

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“用于防腐和电磁干扰屏蔽的聚苯胺/V2O5 复合材料”

摘要 通过界面聚合技术合成了导电聚苯胺（PANI）/五氧化二钒（V2O5）纳米复合材料。复合材料已通过 X 射线衍射 (XRD)、傅里叶变换红外 (FTIR) 光谱和扫描电子显微镜 (SEM) 进行表征。电导率 (σac) 和介电测量是在普通实验室温度下在 50 Hz 至 1 MHz 的频率范围内进行的。对于 PANI 中 15 wt% 的 V2O5 浓度，复合材料的介电常数在较低频率 (1 kHz) 下已增加到 3.75×105 的非常高的值。在微波区域的 12-18 GHz（Ku 波段）频率范围内研究了复合材料的电磁屏蔽行为。