Morphology and Electrical Conductivity of Poly(N-vinylcarbazole)/Carbon Nanotubes Nanocomposite Synthesized by Solid State Polymerization
✍ Scribed by Arjun Maity; Suprakas Sinha Ray; Sreejarani K. Pillai
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 281 KB
- Volume
- 28
- Category
- Article
- ISSN
- 1022-1336
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
This communication describes the morphology and DC conductivity of poly(N‐vinylcarbazole) (PNVC)/multi‐walled carbon nanotubes (MWCNTs) nanocomposite. The nanocomposite has been synthesized by solid state in situ polymerization of N‐vinylcarbazole (NVC) monomer in the presence of MWCNTs at an elevated temperature. Fourier transform infrared (FT‐IR) spectroscopy studies reveal the ability of MWCNTs to promote the in situ polymerization of the NVC monomer. Field‐emission scanning electron microscopy (FE‐SEM) observations show the homogeneous wrapping of MWCNTs' outer surface by PNVC polymer. Transmission electron microscopy (TEM) images and Raman spectroscopy results support the SEM observations. Thermogravimetric analyses reveal a significant improvement of thermal stability of the nanocomposite sample in the higher temperature region. The resulting nanocomposite material exhibits a dramatic improvement of the DC conductivity inherent to the PNVC. For example, the DC conductivity increases from ≈5.9 × 10^−13^ S · cm^−1^ for PNVC to ≈12 S · cm^−1^ for the nanocomposite, an increase of about 10^13^ in the electrical conductivity.
magnified image