Jump to main content
Jump to site search

Issue 4, 2009
Previous Article Next Article

Lowering the percolation threshold of single-walled carbon nanotubes using polystyrene/poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) blends

Author affiliations

Abstract

Single-walled carbon nanotubes (SWCNTs) are introduced into a polymer matrix via a latex-based route resulting in a conductive composite. The percolation threshold for a polystyrene (PS)-based composite prepared with SWCNTs dispersed in water using a conventional surfactant like sodium dodecyl sulfate (SDS) is approximately 0.4 wt%. In this study, SDS is substituted by a conductive polymer latex, poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) also known as PEDOT:PSS. This latex can effectively stabilize individual SWCNTs in water and composites prepared with these dispersions show a lower percolation threshold value of 0.2 wt%. The percolation of PEDOT:PSS in PS in a binary polymer blend without SWCNTs is also investigated, and found to occur at a remarkably low loading of 2.2 wt% of the conductive latex. The morphology of the final polymer-filled blend is further investigated and the findings provide an explanation as to why PEDOT:PSS lowers the percolation threshold of the SWCNTs, and in fact has such a low threshold itself without the presence of the nanotubes.

Graphical abstract: Lowering the percolation threshold of single-walled carbon nanotubes using polystyrene/poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) blends

Back to tab navigation

Publication details

The article was received on 27 Aug 2008, accepted on 07 Nov 2008 and first published on 08 Jan 2009


Article type: Paper
DOI: 10.1039/B814976C
Citation: Soft Matter, 2009,5, 878-885
  •   Request permissions

    Lowering the percolation threshold of single-walled carbon nanotubes using polystyrene/poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) blends

    M. C. Hermant, B. Klumperman, A. V. Kyrylyuk, P. van der Schoot and C. E. Koning, Soft Matter, 2009, 5, 878
    DOI: 10.1039/B814976C

Search articles by author

Spotlight

Advertisements