Compressive behavior of MWCNT/epoxy composite mats (Journal article)

Dassios, K. G./ Musso, S./ Galiotis, C.

Mats of vertically-aligned multiwall carbon nanotubes were grown in an thermal CVD reactor with simultaneous feed of the catalyst and carbon precursors. Mats were soaked into epoxy resin solutions without any prior chemical modification and then cured to produce composite plates of z-axis nano-reinforcement. Direct observations of the epoxy-CNT interactions at the nanoscale revealed that epoxy interacted naturally with the MWCNTs without affecting their physical characteristics, alignment, or the mat's morphology. The compressive behavior of the pristine and composite mats was consistent with mechanical predictions accounting for an elastic regime followed by elastic instability and compaction. Strong evidence of reinforcement in the MWCNT/epoxy composites was indicated by increased strength, stiffness and toughness values with respect to the as-grown mats and pure polymer. The elastic instability strain of the composites was of the order of 0.4. (C) 2012 Elsevier Ltd. All rights reserved.
Institution and School/Department of submitter: Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Μηχανικών Επιστήμης Υλικών
Keywords: carbon nanotubes,nanocomposites,mechanical properties,scanning electron microscopy (sem),chemical vapor deposition (cvd),multiwalled carbon nanotubes,mechanical-properties,single-wall,polymer composites,chemical oxidation,epoxy composites,growth,functionalization,fabrication,modulus
ISSN: 0266-3538
Link: <Go to ISI>://000304643900012
Publisher: Elsevier
Appears in Collections:Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά)

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