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Influence of screw speed on electrical and rheological percolation of melt-mixed high-impact polystyrene/MWCNT nanocomposites
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McClory, Caroline, Pötschke, Petra and McNally, Tony (2011) Influence of screw speed on electrical and rheological percolation of melt-mixed high-impact polystyrene/MWCNT nanocomposites. Macromolecular Materials and Engineering, 296 (1). pp. 59-69. doi:10.1002/mame.201000220 ISSN 1438-7492.
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Official URL: http://dx.doi.org/10.1002/mame.201000220
Abstract
The influence of screw speed on the electrical and rheological percolation of HIPS/MWCNT composites prepared via melt mixing was investigated. Microscopic examination of these composites using POM, FESEM and HRTEM revealed optimum MWCNT dispersion was achieved at intermediate screw speeds. On addition of MWCNTs to HIPS, the electrical conductivity of HIPS increased by up to 12 orders of magnitude. At screw speeds up to 100 rpm an electrical percolation of 1–3 wt.-% was achieved. This increased to 3–5 wt.-% when the screw speed was increased to 150 rpm. The onset of a rheological percolation was detected for an MWCNT loading of 5 wt.-%, irrespective of screw speed employed. An up-shift in the Raman G-band of 24 cm−1 was observed, implying strong interfacial interaction between HIPS and MWCNTs.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
Journal or Publication Title: | Macromolecular Materials and Engineering | ||||||||
Publisher: | Wiley | ||||||||
ISSN: | 1438-7492 | ||||||||
Official Date: | 14 January 2011 | ||||||||
Dates: |
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Volume: | 296 | ||||||||
Number: | 1 | ||||||||
Page Range: | pp. 59-69 | ||||||||
DOI: | 10.1002/mame.201000220 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
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