Thin-Film Layering of Conductive Polymer Composite 2-wt% Multiwalled Carbon Nanotube (MWCNT)/Poly (3,4-ethylenedioxythiophene):Poly (Styrenesulfonic Acid) (PEDOT:PSS) for Electromagnetic Interference Shielding

Abstract

We investigated the cumulative effects of layering a thin film of conductive polymer composite 2-wt multiwall carbon nanotube filler in poly (3,4-ethylenedioxythiophene):poly (styrenesulfonic acid) on a transparent and flexible Mylar substrate for application to electromagnetic interference (EMI) shielding. The optical transmittance of spin-coated composite layers is 90%, 45%, and 20% with a thickness of 0.05, 0.15, and 0.45 m, respectively. However, when the same composition of composite formula is drop casted, the film thickness increases tenfold and the optical transmittance drops to 0%. This study also shows that the cumulative effects of composite layering are additive, but the electrical properties do not scale the same way. A significant increase in the EMI shielding effectiveness in the Ku-band is mainly attributed to the enhanced electrical conductivity of the composite layering.

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Document Details

Document Type
Technical Report
Publication Date
Sep 05, 2019
Accession Number
AD1080258

Entities

People

  • Eugene S. Zakar
  • Madan Dubey
  • Theodore Anthony

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Carbon Nanotubes
  • Composite Materials
  • Conductive Polymers
  • Conductivity
  • Electrical Conductivity
  • Electromagnetic Interference
  • Films
  • Fullerenes
  • Graphene
  • Ku Band
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Polymer Matrix Composites
  • Polymers
  • Shielding
  • Thin Films

Fields of Study

  • Materials science

Readers

  • Nanocomposite Materials Science
  • Solar Photovoltaics and Thermoelectric Devices.
  • Thin Film Deposition Science.