Visualization of the conductive paths in injection moulded MWNT/polycarbonate nanocomposites by conductive AFM

Bernadeth Kiss-Pataki, Jyri Tiusanen, Gergely Dobrik, Z. Vértesy, Z. Horváth

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Electrical conductivity of MWNT filled polymer composites can strongly depend on the dispersion of the filler. Injection moulding of the same nanotube filled conductive composite materials can lead to significant differences in conductivities while the corresponding morphological changes seem to be moderate. Here we report on a conductive atomic microscopy (C-AFM) study of a series of polycarbonate/MWNT settings injection moulded with different injection speeds and melt temperatures, completed with optical microscopy, SEM and TEM characterization. C-AFM was found to be able to visualize the significant differences in the morphology of electrical pathways in cross section. These morphological variations seem to correlate to the differing volume resistivity data and are in agreement with the expected structural effects of injection moulding processes with different parameters.

Original languageEnglish
Pages (from-to)102-109
Number of pages8
JournalComposites Science and Technology
Volume90
DOIs
Publication statusPublished - Jan 10 2014

Fingerprint

polycarbonate
Polycarbonates
Injection molding
Nanocomposites
Visualization
Filled polymers
Conductive materials
Composite materials
Nanotubes
Optical microscopy
Fillers
Microscopic examination
Transmission electron microscopy
Scanning electron microscopy
Temperature

Keywords

  • A. Carbon nanotubes
  • A. Polymer-matrix composites (PMCs)
  • B. Electrical properties
  • D. Atomic force microscopy (AFM)
  • E. Injection moulding

ASJC Scopus subject areas

  • Engineering(all)
  • Ceramics and Composites

Cite this

Visualization of the conductive paths in injection moulded MWNT/polycarbonate nanocomposites by conductive AFM. / Kiss-Pataki, Bernadeth; Tiusanen, Jyri; Dobrik, Gergely; Vértesy, Z.; Horváth, Z.

In: Composites Science and Technology, Vol. 90, 10.01.2014, p. 102-109.

Research output: Contribution to journalArticle

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