Poly(o-anisidine) carbon fiber based composites as an introductory material for EMI shielding

Poly(o-anisidine) Carbon Fiber Based Composites As An Introductory Material For EMI Shielding      

Rakesh Kumar1,2,3, Seema Joon1,3, Avanish P. Singh1, Brij P. Singh2, S. K. Dhawan1*

1Polymeric & Soft Material Section, CSIR-National Physical Laboratory, New Delhi 110012, India

2Department of Chemistry, DCRUST Murthal, Sonipat, Haryana 130001, India

3PDM College of Engineering, Bahadurgarh, Haryana 124507, India 

Adv. Mater. Lett., 2015, 6 (9), pp 803-809

DOI: 10.5185/amlett.2015.5915

Publication Date (Web): Sep 06, 2015

E-mail: skdhawan@mail.nplindia.ernet.in


In response to the striking research activity and publications in fabrication of multifunctional materials, the present work is an attempt to fabricate processible composite sheets of poly (o-anisidine)-carbon fiber (PoACF) by a facile, low cost method and find their use in electromagnetic interference (EMI) shielding in X-band (8.2-12.4 GHz).  PoACF composite is synthesized by in-Situ oxidative emulsion polymerization and transformed into thin sheets by compression molding technique using different ratio of phenolic novolac resin as a binder. The prepared PoACF composites and sheets are characterized by SEM, TGA, UV-vis, & FT-IR techniques. PoACF sheets have conductivity of the order of 10-3 to 10-1 S/cm and maximum shielding effectiveness of 32.57 dB at 4 mm thickness. These sheets have flexural strength between 18.82 to 41.28 MPa. The sheets of PoACF composite have sufficient thermal as well as mechanical stability and may be accepted as an economical material for EMI shielding application.


PoACF thin sheets, carbon fiber, mechanical properties, electrical properties, EMI shielding.

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