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Role of processing history on the mechanical and electrical behavior of melt-compounded polycarbonate-multiwalled carbon nanotube nanocomposites

Choong, Gabriel Y. H.; Lew, Chun Y.; De Focatiis, Davide S.A.

Authors

Chun Y. Lew



Abstract

This work investigates the effects of primary compounding temperature and secondary melt processes on the mechanical response and electrical resistivity of polycarbonate filled with 3 wt % multiwalled carbon nanotubes (CNT). Nanocomposites were melt compounded in an industrial setting at a range of temperatures, and subsequently either injection molded or compression molded to produce specimens for the measurement of electrical resistivity, surface hardness, and uniaxial tensile properties. Secondary melt processing was found to be the dominant process in determining the final properties. The effects observed have been attributed to structural arrangements of the CNT network as suggested by morphological evidence of optical microscopy and resistivity measurements. Properties were found to be relatively insensitive to compounding temperature. The measured elastic moduli were consistent with existing micromechanical models.

Journal Article Type Article
Journal Journal of Applied Polymer Science
Print ISSN 0021-8995
Electronic ISSN 1097-4628
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 132
Issue 8
Article Number 42277
APA6 Citation Choong, G. Y. H., Lew, C. Y., & De Focatiis, D. S. (in press). Role of processing history on the mechanical and electrical behavior of melt-compounded polycarbonate-multiwalled carbon nanotube nanocomposites. Journal of Applied Polymer Science, 132(8), https://doi.org/10.1002/app.42277
DOI https://doi.org/10.1002/app.42277
Keywords extrusion; molding; polycarbonates; properties and characterization; structure-property relations
Publisher URL http://onlinelibrary.wiley.com/doi/10.1002/app.42277/abstract
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information This is the peer reviewed version of the following article: Choong, G. Y. H., Lew, C. Y. and De Focatiis, D. S. A. (2015), Role of processing history on the mechanical and electrical behavior of melt-compounded polycarbonate-multiwalled carbon nanotube nanocomposites. Journal of Applied Polymer Science, 132, 42277, which has been published in final form at http://dx.doi.org/10.1002/app.42277. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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