Jump to main content
Jump to site search


Synergetic improvement of mechanical properties and surface activities in γ-irradiated carbon fibers revealed by radial positioning spectroscopy and mechanical model

Abstract

The relationship between microstructures, surface activities and mechanical properties of γ-irradiated carbon fibers had been evaluated quantitatively. X-ray photoelectron spectroscopy combined with argon ion sputtering indicated that outer-surface part (~10nm) was functionalized and disordered by grafting reaction, which led to the increase of surface activities and sacrifice of mechanical properties of γ-irradiated carbon fibers. The degree of covalent cross-linking between graphene layers of sub-surface (~1.5μm) showed more notable increase than that of core (~4μm), which indicated that sub-surface part was mainly responsible for the improvement on tensile strength of γ-irradiated carbon fibers. Increases of 15.5% (argon) and 13.3% (epoxy chloropropane) in tensile strength were achieved separately. Meanwhile, interfacial shear strength of single fiber in matrix increased by 19.15% (argon) and 75.03% (epoxy chloropropane), respectively. Therefore, such spatially resolved study paved a meaningful way to understand the relationship among microstructures, surface activities and mechanical properties of γ-irradiated carbon fibers.

Back to tab navigation

Supplementary files

Publication details

The article was accepted on 21 Dec 2017 and first published on 27 Dec 2017


Article type: Paper
DOI: 10.1039/C7AY02852K
Citation: Anal. Methods, 2017, Accepted Manuscript
  •   Request permissions

    Synergetic improvement of mechanical properties and surface activities in γ-irradiated carbon fibers revealed by radial positioning spectroscopy and mechanical model

    M. Shan, H. Wang, Z. Xu, N. Li, C. Chen, J. Shi, L. Liu, L. Kuang, M. Ma and C. Zhang, Anal. Methods, 2017, Accepted Manuscript , DOI: 10.1039/C7AY02852K

Search articles by author

Spotlight

Advertisements