Graphene oxide-coated Poly(vinyl alcohol) fibers for enhanced fiber-reinforced cementitious composites

Xupei Yao, Ezzatollah Shamsaei, Shujian Chen, Qian Hui Zhang, Felipe Basquiroto de Souza, Kwesi Sagoe-Crentsil, Wenhui Duan

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)

Abstract

The interface properties between fiber and matrix predominantly influence the mechanical performance of fiber reinforced cementitious composites (FRCCs). In this study, the interface between polyvinyl alcohol (PVA) fibers and mortar was modified by coating graphene oxide (GO) on the fiber surface. Experimental results showed the GO@ PVA fibers improved the tensile strength of FRCCs by 35.6% compared to that of pristine PVA FRCCs. Theoretical analysis indicated this significant improvement was attributed to the enhancement of the chemical bond energy (Gd) at fiber/matrix interface. With GO surface modification, the Gd was increased more than 80 times, changing the failure mode at the interface from adhesive failure to cohesive failure.

Original languageEnglish
Article number107010
Number of pages8
JournalComposites Part B: Engineering
Volume174
DOIs
Publication statusPublished - 1 Oct 2019

Keywords

  • Cement
  • Graphene oxide
  • Interface
  • PVA fibers
  • Surface modification

Cite this