Frequency-stable green EMI shielding in polyaniline-ferrite nanocomposites <i>via</i> dielectric and magnetic tuning.

ABSTRACT: The need for advanced electromagnetic interference (EMI) shielding materials with minimal secondary radiation has driven interest in absorption-dominated or green EMI shielding systems. This work explored the development of efficient and frequency-stabilized green EMI shielding material based on polyaniline (PANI) by in situ incorporation of cobalt nickel ferrite (CNF) nanoparticles into the polymer matrix. EMI shielding effectiveness (SE) was measured in the K-band (18-26.5 GHz), achieving a maximum value of 68.96 dB for PANI/CNF10. All composites investigated in this study surpassed the commercial SE threshold of 30 dB, with shielding primarily governed by absorption. Reduced skin depth and high green index (GI) approaching unity confirmed their efficient absorption behavior. Furt

SUBMITTER: Linsa KSM 

PROVIDER: S-EPMC12421305 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature