Percolation and Film Formation Behaviors of MWNT/PS Nanocomposites

Uğur Ş., Yargi O., Pekcan O.

11th International Conference on the Mechanical Behavior of Materials (ICM), Como, Italy, 01 January 2011, vol.10, pp.1709-1717 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 10
  • Doi Number: 10.1016/j.proeng.2011.04.285
  • City: Como
  • Country: Italy
  • Page Numbers: pp.1709-1717
  • Keywords: PS Latex, Composite film, MWCNT, Conductivity, Photon Transmission, Percolation, NANOTUBE-POLYMER COMPOSITES, TEMPERATURE-DEPENDENCE, PHOTON TRANSMISSION, CARBON NANOTUBES, LATEX-PARTICLES, INTERDIFFUSION, INTERFACES, VISCOSITY
  • Yıldız Technical University Affiliated: Yes

Abstract

This study involves the investigation of film formation and electrical conductivity properties of polystrene (PS) latex/multi-walled Carbon nanotube (MWNT) composites. Films prepared from PS/MWNT mixtures with different MWNT content were separately annealed above glass transition temperature of PS. Film formation stages of PS/MWNT composites were followed by monitoring the change in transmitted light intensity, I-tr. The surface conductivity of films was found to increase dramatically above 4 wt% MWNT following the percolation theory. The conductivity scales with the mass fraction of MWNT as a power law with exponent 2.27, extremely close to the value of 2.0 predicted by percolation theory. (C) 2011 Published by Elsevier Ltd. Selection and peer-review under responsibility of ICM11