Deposition of carbon nanotubes onto aramid fibers using as-received and chemically modified fibers

O. Rodríguez-Uicab, F. Avilés*, P. I. Gonzalez-Chi, G. Canché-Escamilla, S. Duarte-Aranda, M. Yazdani-Pedram, P. Toro, F. Gamboa, M. A. Mazo, A. Nistal, J. Rubio

*Corresponding author for this work

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Multiwall carbon nanotubes (MWCNTs) oxidized by an acid treatment were deposited on the surface of as-received commercial aramid fibers containing a surface coating ("sizing"), and fibers modified by either a chlorosulfonic treatment or a mixture of nitric and sulfuric acids. The surface of the aramid fiber activated by the chemical treatments presents increasing density of CO, COOH and OH functional groups. However, these chemical treatments reduced the tensile mechanical properties of the fibers, especially when the nitric and sulfuric acid mixture was used. Characterization of the MWCNTs deposited on the fiber surface was conducted by scanning electron microscopy, Raman spectroscopy mapping and X-ray photoelectron spectroscopy. These characterizations showed higher areal concentration and more homogeneous distribution of MWCNTs over the aramid fibers for as-received fibers and for those modified with chlorosulfonic acid, suggesting the existence of interaction between the oxidized MWCNTs and the fiber coating. The electrical resistance of the MWCNT-modified aramid yarns comprising ∼1000 individual fibers was in the order of MΩ/cm, which renders multifunctional properties.

Original languageEnglish
Pages (from-to)379-390
Number of pages12
JournalApplied Surface Science
Volume385
Early online date10 May 2016
DOIs
Publication statusPublished - 01 Nov 2016
Externally publishedYes

Keywords

  • Aramid fiber
  • Carbon nanotubes
  • Electrical properties
  • Mechanical properties
  • Multifunctional
  • Surface treatment

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

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