Modification of the carbon fiber surface by oxygen plasma and its influence on adhesion strength in acrylate-based composites cured by electron beam and ultra violet light

F. Vautard, P. Fioux, L. Vidal, J. Dentzer, J. Schultz, M. Nardin, B. Defoort

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Oxygen plasma was used to modify the surface properties of carbon fibers and their adhesion strength with an acrylate resin cured by electron beam. A characterization of the surface topography and the surface chemistry was carried out (topography at a micrometric and nanometric scale, specific surface area, temperature programmed desorption, and X-ray photoelectron spectroscopy). The topography remained unchanged. Regarding the surface chemistry, carboxylic acids, alcohols, lactones, and ethers were created and their location was at the outer surface of the fibers. A pull-out test was used to measure the adhesion strength with the acrylate resin cured by electron beam. For comparison, an isothermal UV curing was also investigated. The value of the interfacial shear strength was increased only in the case of UV curing. No improvement was observed with electron beam curing, which highlighted the generation of an interphase, the mechanical properties of which are dependent on the processing conditions.

Original languageEnglish
Pages (from-to)460-485
Number of pages26
JournalJournal of Adhesion
Volume89
Issue number6
DOIs
StatePublished - 2013
Externally publishedYes

Funding

ANRT (Association Nationale de la Recherche et de la Technologie) is gratefully acknowledged for the Ph.D. grants assigned to F. Vautard. The authors want to thank all people from IS2M (Institut de Science des Matériaux de Mulhouse) who participated in the characterization of the carbon fiber surface properties (S. Ollivier, M. P. Hirn). Ciba is sincerely thanked for supplying the photoinitiator used in this study.

FundersFunder number
Association Nationale de la Recherche et de la Technologie

    Keywords

    • Carbon fibers
    • Fiber=matrix bond
    • Interface
    • Plasma surface treatment
    • Polymer-matrix composites (PMCs)

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