Authors : V. A. Khati, 1* S.B. Kondawar2, R. N. Singru3, V.A.Tabhane4
Page Nos : 598-606
Description :
Magnetic iron oxide (Fe3O4) was prepared by the simple approach of sol–gel process
using ferrous ammonium sulphate as precursor. Conducting polyaniline- Magnetic iron
oxide (PANI/ Fe3O4) composites were synthesized by in-situ polymerization technique in
sulphuric acid medium with ammonium persulphate as oxidizing agent in the presence
synthesized particles of Fe3O4 as reinforcing filler in different concentrations so as to
study the effect of filler particles on magnetic behaviour of the conducting polyaniline.
The synthesized composites were characterized by XRD, FTIR, UV-VIS and SEM
analysis. The X-ray diffraction (XRD) pattern and scanning electron microscopy (SEM)
image show that crystalline Fe3O4embedded into polycrystalline PANI to form crystalline
composites. Fourier transform infrared (FTIR) and ultraviolet visible (UV-VIS)
spectroscopy show that Magnetic iron oxide particles get electro statically bound to the
specific sites of polyaniline, thereby modifying torsional degrees of freedom of the
composites system. VSM study reveals that PANI/ Fe3O4 composites show
ferromagnetic with filler concentration dependant variation of saturation magnetization
(Ms), coercive field (Hc) and remnant magnetization (Mr).