Conducting nanocomposites of poly(N-vinylcarbazole) with single-walled carbon nanotubes

Arjun Maity, Suprakas Sinha Ray

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The in situ solid-state polymerization of N-vinylcarbazole (NVC) at an elevated temperature in the presence of single-walled carbon nanotubes (SWCNTs) leads to the formation of new types of composite materials, the morphology and properties of which were characterized by field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), and electrical property measurements. FTIR spectroscopy and XPS studies confirmed the ability of SWCNTs to initiate the in situ polymerization of NVC monomers. FE-SEM and TEM results showed the coating of the outer surfaces of SWCNTs by the PNVC hompolymer with separation of individual SWCNTs from the bundles. Thermogravimetric analysis revealed a moderate improvement in the thermal stability of the nanocomposites at a higher temperature region relative to the base polymer. The electrical conductivity of neat polymer dramatically improved in the presence of SWCNTs. For example, dc electrical conductivity increased from 10 -16-10 -12 S·cm -1 for neat PNVC to ∼10 -6 S·cm -1 for nanocomposite containing 9 wt% SWCNTs.

Original languageEnglish
Pages (from-to)1728-1734
Number of pages7
JournalJournal of Nanoscience and Nanotechnology
Volume8
Issue number4
DOIs
Publication statusPublished - Apr 2008
Externally publishedYes

Keywords

  • Electrical conductivity
  • Morphology
  • Poly(N-vinylcarbazole)
  • Polymerization
  • Single-walled carbon nanotubes

ASJC Scopus subject areas

  • Bioengineering
  • General Chemistry
  • Biomedical Engineering
  • General Materials Science
  • Condensed Matter Physics

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