| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1336298 | Polyhedron | 2011 | 11 Pages |
We have presented a method for the fabrication of poly(3-thiophenyl acetic acid) (P3TAA)–BaFe12O19 nanocomposites by the in situ polymerization of P3TAA in the presence of synthesized BaFe12O19 nanoparticles. The nanoparticles and the nanocomposite were analyzed by XRD, FTIR, TGA, TEM, VSM and conductivity techniques for structural and physicochemical characteristics. Crystallographic analysis revealed the phase as hexaferrite and X-ray line profile fitting yielded a crystallite size of 32 nm. The particles, observed by TEM, exhibit irregular shapes and sizes between 100 and 500 nm, revealing polycrystalline character when compared with the crystallite size from XRD. FTIR and TGA analysis results show that P3TAA is conjugated to the particle surface via a carboxylate group and that the composite has a polymer content of ∼10%. Magnetic hysteresis curves do not saturate at high fields, which is a characteristic feature of fine particle systems with grain sizes smaller than 1 μm. Conductivity measurements showed a semiconductor character of the nanocomposite.
Graphical abstractWe present a method for the fabrication of poly(3-thiophenyl acetic acid) (P3TAA)–BaFe12O19 nanocomposites by in situ polymerization of 3TAA in the presence of synthesized BaFe12O19 nanoparticles. Nanoparticles and the nanocomposite were analyzed by XRD, FTIR, TGA, TEM, VSM and conductivity techniques for structural and physicochemical characteristics. Crystallographic analysis revealed the phase as hexaferrite and X-ray line profile fitting yielded a crystallite size of 32 nm. Particles are observed by TEM exhibit irregular shapes and sizes between 100 and 500 nm, revealing polycrystalline character when compared with crystallite size from XRD. FTIR and TGA analysis results show that P3TAA is conjugated to the particle surface via carboxylate group feature of fine particle systems with grain sizes smaller than 1 m. Conductivity measurements showed semiconductor character of the nanocomposite.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Poly(3-thiophenyl Acetic Acid) (P3TAA)-BaFe12O19 nanocomposite was synthesized by in situ polymerization of 3TAA. ► Saturation magnetization of the coated particle, 44.5 emu/g, is considerably lower compared to the bulk value of 64.3 emu/g and the conductivity of the nanocomposite shows semiconducting character. ► The synthesized conducting polymer composites might be open new possibilities for the achievement of good shielding effectiveness for various electromagnetic sources.
