Influence of Oxyfluorination on Geometrical Pull-Out Behavior of Carbon-Fiber-Reinforced Epoxy Matrix Composites

Yoon Ji Yim, Kyong Min Bae, Soo Jin Park

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

To improve the interfacial adhesion between carbon fibers and an epoxy matrix, carbon fibers were modified by oxyfluorination at different temperature conditions. Surface analyses of the oxyfluorinated carbon fibers were performed using scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and dynamic contact angle measurements. The interfacial shear strength (IFSS) of a single carbon fiber/epoxy matrix was studied by employing single-fiber pull-out tests to confirm the interfacial adhesion. The pull-out behavior of the fiber from the matrix was discussed based on the Greszczuk’s geometrical model. Functional groups such as C-F, C-O, and COOH were present on the carbon fiber surfaces after oxyfluorination. Moreover, the presence of functional groups increased the surface polarity of the fibers, resulting in an increase in the IFSS owing to the improvement of the interfacial adhesive strength between the carbon fibers and the epoxy matrix. [Figure not available: see fulltext.].

Original languageEnglish
Pages (from-to)794-799
Number of pages6
JournalMacromolecular Research
Volume26
Issue number9
DOIs
StatePublished - 1 Sep 2018

Bibliographical note

Publisher Copyright:
© 2018, The Polymer Society of Korea and Springer Nature B.V.

Keywords

  • carbon fiber
  • oxyfluorination
  • polymer-matrix composites (PMCs)
  • surface treatments

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