Electromagnetic interference shielding behaviors of in-situ polymerized ferrite-polyaniline nano-composites and ferrite-polyaniline deposited fabrics in X-band frequency range

Hybrid structure of MWCNT/ferrite and GO incorporated composites for microwave shielding properties and their practical applications

“… 17–19 In our earlier works, we also have studied the effect of different ferrite nanomaterials (cobalt, nickel, zinc and zinc doped ferrites) along with conducting polyaniline and we have found that saturation magnetization of ferrite nanoparticles, their dispersibility and thickness of materials play a major role in achieving the high shielding effectiveness. 20 In the current study, we dealt simultaneously with both electrical losses and magnetic losses by incorporating ferrite nanoparticles into multiwalled carbon nanotubes and a hybrid phase of both with graphene oxide to propose lightweight hybrid composite materials with highly efficient EMI shielding. So, to achieve the high shielding absorption response, we have taken the modified composition of cobalt ferrite and nickel ferrite.…”

Electromagnetic wave shielding flexible films with near-zero reflection in the 5G frequency band

“…With the increase in the thickness of the shielding layer, the attenuation of EM waves due to absorption increases. 51 However, a too thick layer may not be practical for mobile electronic applications in the field.…”

Electromagnetic interference cognizance and potential of advanced polymer composites toward electromagnetic interference shielding: A review

“…A composite synthesized by zinc substitution in nickel ferrite and polyaniline (PANI) as a polymer (50 wt%) by the sol-gel method and in situ polymerization exhibited an excellent EMI shielding effectiveness of 60 dB in the Xband. [60] For another PANI/V 2 O 5 composite, dielectric measurements in the frequency range of 50 Hz-1 MHz at room temperature, a high dielectric constant of 3.75 Â 10 5 at a lower frequency (1 kHz) for 15 wt% V 2 O 5 as filler in PANI, and EMI shielding effectiveness values of 17-19 dB in the Ku-band (12-18 GHz) of the microwave region have been reported. [70] Similarly, Cd 2+ -substituted nickel ferrite (30 wt% NiCdFe 2 O 4 )-doped PANI nanocomposites have been reported to exhibit a ferromagnetism shielding effectiveness of 42.7 dB in the X-band owing to the synergistic effect of magnetic and conductive nanoparticles, presenting them as an effective EMI shield for various electrical, electronic, and radiation equipment.…”

“…They are inexpensive and easily available on the market. Polymer nanocomposites can be synthesized by (i) the intercalation method, [58] (ii) in situ polymerization, [59] (iii) sol-gel method [60] and (iv) direct mixing of polymer and nanofillers [61] and then processed by injection molding, calendaring, casting, compression molding, blow molding, rotational molding, extrusion molding, and thermoforming.…”