Ternary magnetic nanocomposites based on core–shell Fe₃O₄/polyaniline nanoparticles distributed in PVDF matrix

Abstract

Magnetic, electric, and radioprotector properties of hybrid nanocomposites of Fe3O4 nanoparticles with and without a shell of polyaniline (PANI), which is doped with dodecylbenzenesulfonic acid (DBSA), dispersed in polyvinylidene fluoride (PVDF) matrix have been studied. It has been found that the presence of PANI–DBSA as a separate filler in the ternary nanocomposite film, which also contains as another filler the core–shell Fe3O4/PANI–DBSA nanoparticles, facilitates dispersion of the magnetic filler due to the improvement of its compatibility with the PVDF matrix. This leads both to the decrease in coefficient of squareness of the hysteresis loop and to the increase in electromagnetic energy (EME) absorption of the nanocomposite film.

Fabrication of Nickel NanoChains/PVDF Nanocomposites and Their Electrical/Magnetic Properties

“…For the past 10 years, many studies have shown that the dispersion of ferromagnetic fillers in a diamagnetic matrix gave significant ferromagnetic properties . Especially magnetic nano fillers present exceptional properties such as strong magnetization and high coercive field ( H c ).…”

On the importance of interface interactions in core-shell nanocomposites of intrinsically conducting polymers

“…Structure differences between the conducting polymer in pure and composite states were confirmed for different (nano)composites [16,17,19,23,25,26,29,[30][31][32][33]. For example, from the XRD-spectra of doped polyaniline and its nanostructured composite with polycarbonate (PC), we found that its degree of crystallinity in the pure state was about 3 times lower, and 6.…”

Magnetic Properties of Poly(trimethylene terephthalate‐block‐Poly(tetramethylene oxide) Copolymer Nanocomposites Reinforced by Graphene Oxide–Fe3O4 Hybrid Nanoparticles

“…[56] Reduction in Q could be due to different reasons such as interparticle interaction, distribution of particle sizes, the presence of various defects, and so on. Petrychuk et al [57] investigated samples containing interacting magnetic nanoparticles forming clusters of different sizes. For small-sized magnetic clusters, the magnetic energy may be small enough to enable thermal energy the enhancement of the superparamagnetic contribution into magnetization.…”