Understanding interfacial interactions of polydopamine and glass fiber and their enhancement mechanisms in epoxy-based laminates

Hongping Zhang, Wei Han, Javad Tavakoli, Ya-ping Zhang, Xiaoyan Lin, Xiong Lu, Yong Ma, Youhong Tang

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Interfacial behavior greatly affects the bulk mechanical performance of fiber reinforced polymer laminates. In this study, polydopamine modified glass fiber was used to fabricate short glass fiber reinforced polymer (GFRP) laminates. The interactions between glass fiber and polydopamine were studied experimentally and theoretically by X-ray photoelectron spectroscopy (XPS) and density functional calculation respectively. Theoretical study clearly demonstrated that electronic interactions existed between polydopamine and glass fiber, indicating the hydrogen bonds/chemical interactions between them that were also demonstrated by XPS results. The enhanced interfacial interaction significantly benefited GFRP laminates, as demonstrated by various mechanical characterizations such as single fiber pull-out and Mode I interlaminar fracture toughness tests. Combining the theoretical and experimental studies indicated that polydopamine modification of glass fiber could be an easy and effective way to significantly improve the interfacial interactions between glass fiber and matrix and enhance the mechanical properties of GFRP laminates.

Original languageEnglish
Pages (from-to)62-71
Number of pages10
JournalComposites Part A: Applied Science and Manufacturing
Volume116
DOIs
Publication statusPublished - Jan 2019

Keywords

  • A. Glass fibers
  • B. Interface/interphase
  • B. Mechanical properties
  • D. Surface analysis

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