%0 Journal Article
%T Spectroscopic study of double-walled carbon nanotubes functionalization for preparation of carbon nanotube / epoxy composites
%+ Laboratoire Charles Coulomb (L2C)
%+ Chemical Engineering Department
%+ TASC-INFM
%+ Pôle Matériaux Polymères Avancés (Pôle MPA)
%+ Laboratoire de Chimie Physique - Matière et Rayonnement (LCPMR)
%A Leon, Vincent
%A Parret, Romain
%A Almairac, Robert
%A Alvarez, Laurent
%A Babaa, Moulay-Rachid
%A Doyle, Brian P.
%A Ienny, Patrick
%A Parent, Philippe
%A Zahab, Ahmed Azmi
%A Bantignies, Jean-Louis
%< avec comité de lecture
%@ 0008-6223
%J Carbon
%I Elsevier
%V 50
%N 14
%P 4987-4994
%8 2012-06-23
%D 2012
%Z 1206.5464
%R 10.1016/j.carbon.2012.06.007
%K polymer
%K epoxy
%K functionalization
%K composite
%K NEXAFS
%K conductivity
%Z Chemical Sciences/Polymers
%Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
%Z Chemical Sciences/Material chemistryJournal articles
%X 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.
%G English
%2 https://hal.science/hal-00711335v3/document
%2 https://hal.science/hal-00711335v3/file/Carbon_-_epoxy-CNT_composite.pdf
%L hal-00711335
%U https://hal.science/hal-00711335
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%~ UNIV-MONTPELLIER
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