A study of the effect of nitrogen and air plasma immersion ion implantation treatments on the properties of carbon fiber

Leide Lili G Da Silva, Luciano Guimares Alves, A. Tóth, Mario Ueda

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

In this paper, plasma immersion ion implantation (PIII) treatments of carbon fibers (CFs) are performed in order to induce modifications of chemical and physical properties of the CF surface aimed to improve the thermoplastic composite performance. The samples to be treated were immersed in nitrogen or air glow discharge plasma and pulsed at -3.0 kV for 2.0, 5.0, 10.0, and 15.0 min. After PIII processing, the specimens were characterized by atomic force microscopy (AFM), scanning electron microscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). Surface morphology of as-received CFs exhibited some scratches aligned along the fibers due to the fiber manufacturing process. After both treatments, these features became deeper, and also, a number of small particles nonuniformly distributed on the fiber surface can be observed. These particles are product of CF surface sputtering during the PIII treatment, which removes the epoxy layer that covers as-received samples. AFM analyses of CF samples treated with nitrogen depicted a large increase of the surface roughness (Rrms value approximately six times higher than that of the untreated sample). The increase of the roughness was also observed for samples treated by air PIII. Raman spectra of all samples presented the characteristic D- and G-bands at approximately 1355 and 1582 cm-1, respectively. Analysis of the surface chemical composition provided by the XPS showed that nitrogen and oxygen are incorporated onto the surface. The polar radicals formed on the surface lead to increasing of the CF surface energy. Both the modification of surface roughness and the surface oxidation are expected to contribute for the enhancement of CF adhesion to the polymeric matrix used for composite manufacturing.

Original languageEnglish
Article number5960797
Pages (from-to)3067-3071
Number of pages5
JournalIEEE Transactions on Plasma Science
Volume39
Issue number11 PART 2
DOIs
Publication statusPublished - Nov 2011

Fingerprint

nitrogen plasma
carbon fibers
submerging
ion implantation
air
nitrogen
fibers
surface roughness
manufacturing
photoelectron spectroscopy
atomic force microscopy
composite materials
glow discharges
chemical properties
surface energy
chemical composition
adhesion
x rays
roughness
Raman spectroscopy

Keywords

  • Adhesion properties
  • carbon fibers (CFs)
  • composites
  • plasma immersion ion implantation (PIII)

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Nuclear and High Energy Physics

Cite this

A study of the effect of nitrogen and air plasma immersion ion implantation treatments on the properties of carbon fiber. / Da Silva, Leide Lili G; Alves, Luciano Guimares; Tóth, A.; Ueda, Mario.

In: IEEE Transactions on Plasma Science, Vol. 39, No. 11 PART 2, 5960797, 11.2011, p. 3067-3071.

Research output: Contribution to journalArticle

Da Silva, Leide Lili G ; Alves, Luciano Guimares ; Tóth, A. ; Ueda, Mario. / A study of the effect of nitrogen and air plasma immersion ion implantation treatments on the properties of carbon fiber. In: IEEE Transactions on Plasma Science. 2011 ; Vol. 39, No. 11 PART 2. pp. 3067-3071.
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