Microwave absorption properties of NiCoFe2O4-graphite embedded poly(o-phenetidine) nanocomposites (original) (raw)

Poly(o-phenetidine) nanocomposites (PNG) with NiCoFe 2 O 4 and exfoliated graphite have been synthesized via in-situ emulsion polymerization. Systematic investigations reveal that the NiCoFe 2 O 4 nanoparticles (30-40 nm) in the poly(o-phenetidine) matrix have phenomenal effect in determining the electrical, magnetic, and the microwave absorption properties of the nanocomposites. Shielding effectiveness due to absorption (SE A ) value of 32 dB (>99.9%) has been achieved for PNG composite for its use as broadband microwave absorbing material. The microwave absorption of these composites can be attributed to dielectric loss from graphite and poly(ophenetidine) matrix, and magnetic loss from NiCoFe 2 O 4 nanoparticles.