Spectroscopic study of double-walled carbon nanotubes functionalization for preparation of carbon nanotube / epoxy composites - Archive ouverte HAL
Journal Articles Carbon Year : 2012

Spectroscopic study of double-walled carbon nanotubes functionalization for preparation of carbon nanotube / epoxy composites

Vincent Leon
  • Function : Correspondent author
  • PersonId : 926799

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Romain Parret
Laurent Alvarez
  • Function : Author
  • PersonId : 872727
Moulay-Rachid Babaa
  • Function : Author
  • PersonId : 766434
  • IdRef : 096241373
Brian P. Doyle
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Patrick Ienny
Ahmed Azmi Zahab
  • Function : Author
  • PersonId : 872777
Jean-Louis Bantignies
  • Function : Author
  • PersonId : 841455

Abstract

A spectroscopic study of the amino functionalization of double-walled carbon nanotube (DWCNT) is performed. Original experimental investigations by near edge X-ray absorption fine structure spectroscopy at the C and O K-edges allow one to follow the efficiency of the chemistry during the different steps of covalent functionalization. Combined with Raman spectroscopy, the characterization gives a direct evidence of the grafting of amino-terminated molecules on the structural defects of the DWCNT external wall, whereas the internal wall does not undergo any change. Structural and mechanical investigation of the amino functionalized DWCNT / epoxy composites show coupling between epoxy molecules and the DWCNTs. Functionalization improves the interface between amino-functionalized DWCNT and the epoxy molecules. The electrical transport measurements indicate a percolating network formed only by inner metallic tubes of the DWCNTs. The activation energy of the barriers between connected metallic tubes is determined around 20 meV.
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Dates and versions

hal-00711335 , version 1 (23-06-2012)
hal-00711335 , version 2 (23-06-2012)
hal-00711335 , version 3 (26-08-2012)

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Vincent Leon, Romain Parret, Robert Almairac, Laurent Alvarez, Moulay-Rachid Babaa, et al.. Spectroscopic study of double-walled carbon nanotubes functionalization for preparation of carbon nanotube / epoxy composites. Carbon, 2012, 50 (14), pp.4987-4994. ⟨10.1016/j.carbon.2012.06.007⟩. ⟨hal-00711335v3⟩
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