Issue Description


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).

Date of Online: 30 Jan 2014