Radial Distribution of Crystallinity in Aramid Fibers Investigated by Raman Spectroscopy

Wei-Gen Yang; Yuan Lin; Hao-Jun Sun; Zhao-Hui Su

doi:10.1007/s10118-026-3822-3

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Radial Distribution of Crystallinity in Aramid Fibers Investigated by Raman Spectroscopy

RESEARCH ARTICLE | Updated：2026-09-10

- Radial Distribution of Crystallinity in Aramid Fibers Investigated by Raman Spectroscopy
- Chinese Journal of Polymer Science Vol. 44, Pages: 1-7(2026)
- Affiliations：
  
  a.State Key Laboratory of Polymer Science and Technology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  b.School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, China
  c.National Synchrotron Radiation Laboratory, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China
- Author bio：
  
  zhsu@ciac.ac.cn
- Funds：
- DOI：10.1007/s10118-026-3822-3
  CLC：
- Received：13 March 2026，
  
  Accepted：20 July 2026，
  
  Online First：10 September 2026，
  
  Published：2026-08
- Accepted：
Scan QR Code
Yang, W. G.; Lin, Y.; Sun, H. J.; Su, Z. H. Radial distribution of crystallinity in aramid fibers investigated by Raman spectroscopy. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3822-3

Wei-Gen Yang, Yuan Lin, Hao-Jun Sun, et al. Radial Distribution of Crystallinity in Aramid Fibers Investigated by Raman Spectroscopy[J/OL]. Chinese Journal of Polymer Science, 2026, 441-7.
Yang, W. G.; Lin, Y.; Sun, H. J.; Su, Z. H. Radial distribution of crystallinity in aramid fibers investigated by Raman spectroscopy. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3822-3 DOI：

Wei-Gen Yang, Yuan Lin, Hao-Jun Sun, et al. Radial Distribution of Crystallinity in Aramid Fibers Investigated by Raman Spectroscopy[J/OL]. Chinese Journal of Polymer Science, 2026, 441-7. DOI： 10.1007/s10118-026-3822-3.

摘要

Abstract

The skin-core morphology and the crystallinity in aramid fibers critically influence their mechanical properties. In this study

Kevlar 29 and Kevlar 49 fibers were embedded in epoxy and cut along the longitudinal direction

and the cross-sections were characterized by using confocal Raman spectroscopy. The degrees of crystallinity in the skin and the core regions were determined quantitatively

and the crystallinity profiles along the radial direction were obtained for both fibers. The results showed that the crystallinity at the fiber surface was relatively low

which increased quickly into the fiber and approached a higher plateau value at the fiber center. The Kevlar 49 exhibited a steeper increase in the skin region than Kevlar 29

and a more uniform distribution in the core region with a higher degree of crystallinity.

关键词

Keywords

references

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