Fly ash incorporated polyaniline as a high performance shield against electromagnetic pollution

TitleFly ash incorporated polyaniline as a high performance shield against electromagnetic pollution
Publication TypeConference Paper
Year of Publication2015
AuthorsFaisal, M., and S. J. Varma
PublisherDepartment of Physics, Cochin University of Science and Technology, Cochin, Kerala, India
Conference LocationCochin, Kerala, India
KeywordsDepartment of Science and Humanities
Abstract

There is an ever increasing demand for high-performance electromagnetic interference (EMI)shielding materials due to the rapid proliferation of electronics and instrumentation systems.Fly ash is an amorphous coal byproduct from coal fired thermal power stations and the enormouslyincreasing amount of fly ash is a growing environmental problem. Herein, we report the investigationson EMI shielding and dielectric properties of synthesized polyaniline/fly ash (PAni/FA) composites.The spectroscopic characterizations of PAni/FA composites were performed using Fouriertransform infrared (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM).The EMI shielding measurements were carried out in the frequency range of 8-12 GHz (X-Band),relevant for practical applications. The shielding analysis demonstrates that the presence offly ash in the polyaniline matrix facilitates strong dipole interaction due to the formation of higherinterfacial area and porous network, which leads to high shielding effectiveness (SE) in the

URLhttp://iceee2015.cusat.ac.in/