Development and characterization of PEEK/carbon nanotube composites

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DOIResolve DOI: http://doi.org/10.1016/j.carbon.2009.07.020
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TypeArticle
Journal titleCarbon
Volume47
Issue13
Pages30793090; # of pages: 12
Subjectnew poly(ether ether ketone); PEEK; single-walled carbon nanotubes; SWCNT; morphology; ethanol; thermogravimetric; crystal
AbstractNew poly(ether ether ketone) (PEEK) based composites have been fabricated by the incorporation of single-walled carbon nanotubes (SWCNTs) using melt processing. Their structure, morphology, thermal and mechanical properties have been investigated. Scanning electron microscopy observations demonstrated a more uniform distribution of the CNTs for samples prepared following a processing route based on polymer ball milling and CNT dispersion in ethanol media. Thermogravimetric analysis indicated a remarkable improvement in the thermal stability of the matrix by the incorporation of SWCNTs. Differential scanning calorimetry showed a decrease in the crystallization temperature with increasing SWCNT content, whilst no significant changes were observed in the melting of the composites. The crystallite size determined by X-ray diffraction decreased at high SWCNT loading, which is attributed to the spatial limitations on crystal growth by confinement within the CNT network. Dynamic mechanical analysis revealed an increase in the storage moduli, hence in the rigidity of the systems, with increasing SWCNT content. Their addition shifts the glass transition peak to higher temperatures due to the restriction in chain mobility imposed by the CNTs. Higher thermal stability and mechanical strength were found for composites with improved dispersion of the SWCNTs.
Publication date
LanguageEnglish
AffiliationNRC Steacie Institute for Molecular Sciences; National Research Council Canada
Peer reviewedYes
NPARC number16435928
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Record identifier96057940-149c-4d44-b210-d1636d7b26ff
Record created2011-02-14
Record modified2016-05-09
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