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DIELECTRIC & MECHANICAL PROPERTIES OF PANI COATED Ni0.6Zn 0.4 Fe2O4 FERRITE-NATURAL RUBBER COMPOSITE
Haisel Mathew,Bipinbal P.K, Sunny Kuriakose,B.Syamala Kumari

Published in: International Journal of Current Engineering And Scientific Research ( IJCESR)
Volume- 4, Issue-9, pp.23-30, Sep 2017
DPI :-> 16.10046.IJCESR.2017.V4I9.2330.1914



Abstract
Amongst the family of conducting polymers, polyaniline(PANI) is unique due to its ease of synthesis, environmental stability, and simple doping / dedoping chemistry. Making PANI with suitable materials is a method to vary the properties of PANI. Organic–inorganic nanocomposites with an organized structure has been extensively studied because they combine the advantages of the inorganic materials and the organic polymers which are difficult to obtain from individual components. The property of composite depends on several factors such as type of filler,size of filler ,concentration and the interaction between the filler molecules and the polymer macromolecules. In the present work, The Ni0.6Zn0.4Fe2O4 mixed ferrite nanoparticle is prepared by Sol-Gel method. PANI coated NiZn Ferrite is prepared using Camphour sulphonic acid(CSA) as dopant, studied the frequency dependence of dielectric constant and a.c. conductivity . PANI coated NiZn Ferrite is blended with natural Rubber(NR) using Brabender Plasticorder& tried to measure the dielectric and mechanical properties of the same. The FTIR, XRD,VSM& SEM analysis of the samples were done. PANI coated NiZn Ferrite showed decrease in dieiectric constant with increase in frequency for all the samplesre. At lower frequencies electronic, ionic, dipolar rand space charge polarizations contribute towards polarization but at higher frequencies some of the polarization contributions relax out, resulting in lowering of dielectric constant. The a.c. conductivity is found to increase with increase in frequency. The formation of polarons upon the oxidation of polyaniline molecule and the combination of two close polarons to form bipolaron is the reason behind the conductive behavior.As the frequency of applied field increases, hopping of carriers also increases ,thereby increasing the conductivity.NI coated NiZn FerriteNatural rubber composite also showed increase in a.c. conductivity and decrease in dielectric constant with increase in frequency for all the samples. The varation in storage modulus of PANI coated NiZn FerriteNatural rubber composite is studied the using Dynamic Mechanical Analyser. With increase in filler content, storage modulus increased showing an increase in the stiffness of the natural Rubber.

Key-Words / Index Term
polymers , PANI coated NiZn Ferrite ,Natural Rubber ,Dielecric constant,A.C.Conductivity,Storage modulus

How to cite this article
Haisel Mathew,Bipinbal P.K, Sunny Kuriakose,B.Syamala Kumari , “DIELECTRIC & MECHANICAL PROPERTIES OF PANI COATED Ni0.6Zn 0.4 Fe2O4 FERRITE-NATURAL RUBBER COMPOSITE”, International Journal of Current Engineering And Scientific Research ( IJCESR), 4, Issue-9, pp.23-30, Sep 2017. DPI:16.10046.IJCESR.V4.I9.1914