Thermal And Frequency Dependance Dielectric Properties Of Conducting Polymer/ Fly Ash Composites

Subhash B. Kondawar1*, A. D. Dahegaonkar2, V. A. Tabhane3, D. V. Nandanwar4

1Department of Physics, Polymer Nanotech Laboratory, R.T.M. Nagpur University, Nagpur, India

2N. S. Science and Arts College Bhadrawati, Dist. Chandrapur, India

3Department of Physics, Pune University, Pune, India

4Department of Physics, Shri Mohata College of Science, Nagpur, India

Adv. Mater. Lett., 2014, 5 (6), pp 360-365

DOI: 10.5185/amlett.2014.amwc.1036

Publication Date (Web): Mar 23, 2014

E-mail: sbkondawar@yahoo.co.in

Abstract


With more than 100 million tonnes of fly ash produced in India, use of fly ash for the preparation of polyaniline – fly ash composites will in no way help in its bulk utilization. Still the authors have made an effort towards the better utility of fly ash by synthesizing polyaniline –fly ash composites for electronic devices where the requirement of dielectric materials with good electrical conductivity. There is great challenge to use the waste of thermal power stations in the form of fly ash as reinforcement for the conducting polymers to be good dielectric materials. In this paper, we report the use of fly ash to prepare conducting polymer composite materials. In-situ polymerization of aniline was carried out in the presence of fly ash (FA) to synthesize conducting polyaniline–fly ash composites (PANI-FA) by chemical oxidation method.   The PANI-FA composites have been synthesized with various compositions (10, 20, 30, 40 and 50 wt %) of fly ash in conducting polymer matrix. The surface morphology of these composites was studied by scanning electron microscopy (SEM). These composites were characterized by Scanning Electron Microscopy (SEM), X-Ray Diffractometry (XRD), Fourier Transform Infra-Red (FTIR) Spectroscopy to investigate surface morphology and structure of the composites. Thermal and frequency dependence dielectric properties of all the synthesized composites have been studied with the help of impedance analyzer. By incorporating fly ash into conducting polymers, dielectric constant of the composites was found to be improved as compared to that of pure conducting polymers. It was also noticed that the dielectric constant of all the composites found to be decreased with increasing frequency but increased with increasing temperature. The results obtained for these composites are of greater scientific and technological interest for good quality capacitors.

Keywords

Conducting polymers, polyaniline, fly-ash, composites, dielectric constant

Current Issue

Advanced Materials Congress Celebrating 10th Years of Establishment


Secure Management of Networked Batteries for Building Integrated Photovoltaics (BIPV) Systems  


The Cause of 100-year Low Carbonated Concrete of the Bridge 


Organic Montmorillonite Intercalated Nano-composites Prevent Post-Surgical Associated Infections


Morphology/tensile Performance Relationship for LLDPE/PP Double Gated Injected Blends


Preparation and Characterization of Nickel Ferrite Nanoparticles via Sol-gel Method


Nitrogen-doped Diamond Nanowire Gas Sensor for the Detection of Methane


Manufacture of Functional Open-cell Al Foams with Recycled Al Scraps using NaCl Ball Space Holder 


Vilsmeier-Haack Transformations under Non Classical Conditions


New Application of Highly Vesicular Basalt from Jabel Isbil Volcano (Dhamar-Rada'a Volcanic Field), Yemen


An Assessment of Tribological Characteristics under different Operating Condition


Functional Bi Coatings as A Perspective Material for Radiation Shields Production against Electron Radiation


Effects of Silica Modified NiFe2O4 on the Dielectric and Electrical Properties of NiFe2O4 filled Poly (methyl methacrylate) Composites


Previous issues
The Journey of a Decade to Advancing Materials Are the Electrospun Polymers Polymeric Fibers? Mechanical and Thermal Properties of Composite Material and Insulation for a Single Walled Tank for Cryogenic Liquids Prediction of Long-Term Behavior for Dynamically Loaded TPU Investigation of Doped Titanium Dioxide in Anatase Phase. Study ab initio using Density Functional Theory Comparison between Single Al2O3 or HfO2 Single Dielectric Layers and their Nanolaminated Systems Preparation of Stable and Optimized Antibody-gold Nanoparticle Conjugates for Point of Care Test Immunoassays Resonance-Based Temperature Sensors using a Wafer Level Vacuum Packaged SOI MEMS Process Integrated System Based on the Hall Sensors Incorporating Compensation of the Distortions The Efficacy of Cinnamomum Tamala as a Potential Antimicrobial Substance against the Multi-Drug Resistant Enterococcus Faecalis from Clinical Isolates The Effect of Complexing Reagent on Structural, Electrical and Optical Properties of CuS Thin Film Laser Cladding of Fluorapatite Nanopowders on Ti6Al4V Preparation and Evaluation of Sulfonate Polyethylene Glycol Borate Ester as a Modifier of Functional Properties of Complex Petroleum Lithium Grease

Upcoming Congress

Knowledge Experience at Sea TM