Electrophoretic deposition of aramid nanofibers on carbon fibers for highly enhanced interfacial adhesion at low content

Jea Uk Lee, Byeongho Park, Byeong Su Kim, Dae Ryung Bae, Wonoh Lee

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Here, an anodic electrophoretic deposition was adopted to facilitate the large-scale uniform coating of nano-fillers onto carbon fibers to enhance the interfacial properties between carbon fibers and epoxy matrix. As interface-reinforcing materials, aramid nanofibers were introduced because of their superior mechanical properties and epoxy matrix-friendly functional groups. Furthermore, aramid nanofibers can be readily coated on carbon fibers via electrophoretic deposition because they are negatively-charged in solution with high electrical mobility. Finally, aramid nanofiber-coated carbon fibers showed significantly improved interfacial properties such as higher surface free energy and interfacial shear strengths (39.7% and 34.9% increases, respectively) than those of a pristine carbon fiber despite a very small amount of embedding (0.025 wt% of aramid nanofibers in a carbon fiber), and the short beam strength of the laminated composite prepared with the aramid nanofiber-coated carbon fibers was also improved by 17.0% compared to a non-modified composite.

Original languageEnglish
Pages (from-to)482-489
Number of pages8
JournalComposites Part A: Applied Science and Manufacturing
Volume84
DOIs
Publication statusPublished - 2016 May 1

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All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Mechanics of Materials

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