Characterisation and electrical conductivity of polytetrafluoroethylene/graphite nanoplatelets composite films

• Published in: Applied physics. A, Materials science & processing Vol. 125; no. 7; pp. 1 - 8
• Main Authors: Shulga, Y. M., Melezhik, A. V., Kabachkov, E. N., Milovich, F. O., Lyskov, N. V., Irzhak, A. V., Dremova, N. N., Gutsev, G. L., Michtchenko, A., Tkachev, A. G., Kumar, Yogesh
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.07.2019; Springer Nature B.V
• Subjects: Applied physics; Characterization and Evaluation of Materials; Chemical bonds; Condensed Matter Physics; Electrical resistivity; Graphene; Graphite; Machines; Manufacturing; Materials science; Nanotechnology; Optical and Electronic Materials; Organic chemistry; Photoelectrons; Physics; Physics and Astronomy; Polytetrafluoroethylene; Processes; Raman spectroscopy; Scanning electron microscopy; Spectrum analysis; Surfaces and Interfaces; Thin Films; X ray photoelectron spectroscopy; X-ray diffraction
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-019-2747-x

Graphite nanoplatelets (GNPs), with a thickness of 3–10 graphene layers and lateral linear dimensions varying from 2 to 10 μm, were used to enhance the conductivity of polytetrafluoroethylene (PTFE) films. Ten composite films with the (GNPs) content of 0, 2, 3, 4, 5, 6, 8, 10, 15 and 20 wt% were obtained. These films were characterised using X-ray diffraction, infrared and Raman spectroscopy, scanning electron microscopy and X-ray photoelectron spectroscopy (XPS). The conductivity the conductivity of the composite film increases with an increase in GNP content from 0.00095 S cm −1 at 2% wt% of GNPs to 20.4 S cm −1 at 20% wt% of GNPs. Further, a chemical bond is formed between the graphite nanoplates and polymer chains according to the XPS spectra.