International Research journal of Management Science and Technology

  ISSN 2250 - 1959 (online) ISSN 2348 - 9367 (Print) New DOI : 10.32804/IRJMST

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COMPARATIVE STUDY OF STRUCTURAL, THERMAL, MAGNETIC AND ELECTRICAL PROPERTIES OF POLYANILINE-NI1-XZNXFE2O4 NANOCOMPOSITES

    3 Author(s):  BIKRAMJIT KAUR ,RUCHIKA TANWAR ,UTTAM KUMAR MANDAL

Vol -  10, Issue- 10 ,         Page(s) : 39 - 49  (2019 ) DOI : https://doi.org/10.32804/IRJMST

Abstract

Polyaniline–NiZnFe2O4 nanocomposites were prepared via chemical oxidative polymerization of aniline in the presence of 10% of Ni1-xZnxFe2O4 nanoparticles varying x as 0, 0.25, 0.5, 0.75 and 1. These nanocomposites have been characterized by XRD, high-resolution TEM, VSM and TGA. TEM images suggests that the nanoparticles are properly embedded in the polyaniline matrix and fibrous chain like structure of the polymer. It is found that magnetic and thermal properties of these nanocomposites are best for x=0.5. The effect of loading of nanoparticles in polyaniline on AC conductivity and impedance of all the compositions were systematically investigated in the frequency range of 100Hz to 100MHz. DC Electrical conductivity with temperature variation was studied by four probe method. The increase in dc conductivity with increasing temperature indicates the semiconducting behaviour of nanocomposites. The conductivity of nanocomposites was found to be improved than pure polyaniline for x=0.25 and 0.5 only, whereas for other compositions, the conductivity decreases. The results revealed that these composites can be used for electro-magnetic applications

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