Organosilane modified magnetite nanoparticles/poly(aniline-co-o/m-aminobenzenesulfonic acid) composites: Synthesis and characterization

A new strategy is employed for the preparation of hybrid nanocomposites based on silanized magnetite nanoparticles (MNPs-Si) and sulfonated polyanilines (SPAN). The method involves chemical oxidative copolymerization of orthoanilinic (OA) or metanilinic (MA) acid with aniline (ANI) in the presence of MNPs-Si. The nanocomposites, MNPs-Si/SPAN (OA/MA), were characterized for morphology and structural, thermal, electrical and magnetic properties. The composites have higher conductivities (0.25-0.39 S/cm) in comparison to pristine PANI (5.19 × 10−3 S/cm). The nanocomposites exhibit superparamagnetism.