High Strength Electrospun Single Copolyacrylonitrile (coPAN) Nanofibers with Improved Molecular Orientation by Drawing

Tang-Cheng Xu; Dong-Hua Han; Yong-Mei Zhu; Gai-Gai Duan; Kun-Ming Liu; Hao-Qing Hou

doi:10.1007/s10118-021-2516-0

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High Strength Electrospun Single Copolyacrylonitrile (coPAN) Nanofibers with Improved Molecular Orientation by Drawing

ARTICLE | Updated：2020-11-16

- High Strength Electrospun Single Copolyacrylonitrile (coPAN) Nanofibers with Improved Molecular Orientation by Drawing
- Chinese Journal of Polymer Science Vol. 39, Issue 2, Pages: 174-180(2021)
- Affiliations：
  
  a.Department of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
  b.Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
  c.School of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
- Author bio：
  
  duangaigai@njfu.edu.cn (G.G.D.)
  haoqing@jxnu.edu.cn (H.Q.H.)
- Funds：
- DOI：10.1007/s10118-021-2516-0
  CLC：
- Received：31 May 2020，
  
  Revised：2020-9-24，
  
  Accepted：08 October 2020，
  
  Online First：16 November 2020，
  
  Published：02 January 2021
- Accepted：
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Xu, T. C.; Han, D. H.; Zhu, Y. M.; Duan, G. G.; Liu, K. M.; Hou, H. Q. High strength electrospun single copolyacrylonitrile (coPAN) nanofibers with improved molecular orientation by drawing. Chinese J. Polym. Sci. 2021, 39, 174–180

Tang-Cheng Xu, Dong-Hua Han, Yong-Mei Zhu, et al. High Strength Electrospun Single Copolyacrylonitrile (coPAN) Nanofibers with Improved Molecular Orientation by Drawing[J]. Chinese Journal of Polymer Science, 2021, 39(2): 174-180.
Xu, T. C.; Han, D. H.; Zhu, Y. M.; Duan, G. G.; Liu, K. M.; Hou, H. Q. High strength electrospun single copolyacrylonitrile (coPAN) nanofibers with improved molecular orientation by drawing. Chinese J. Polym. Sci. 2021, 39, 174–180 DOI： 10.1007/s10118-021-2516-0.

Tang-Cheng Xu, Dong-Hua Han, Yong-Mei Zhu, et al. High Strength Electrospun Single Copolyacrylonitrile (coPAN) Nanofibers with Improved Molecular Orientation by Drawing[J]. Chinese Journal of Polymer Science, 2021, 39(2): 174-180. DOI： 10.1007/s10118-021-2516-0.

摘要

Abstract

High-performance carbon nanofibers are highly dependent on the performance of their precursors

especially polyacrylonitrile (PAN). In this work

the copolymer of PAN (coPAN) was synthesized for electrospinning. A self-assembling set-up was used for the stretching of single coPAN nanofibers. FTIR and Raman spectroscopies were used to characterize the chemical structure of coPAN nanofibers. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) were used to monitor the morphology of single coPAN nanofibers under different drawing times. Micro-tensile test was used to determine the mechanical properties of single coPAN nanofibers. The results indicated that the drawing led to an increase in degree of molecular orientation along the fiber axis from 0.656 to 0.808

tensile strength from 304 MPa to 595 MPa

and modulus from 3.1 GPa to 12.4 GPa. This research would provide fundamental information of high-performance electrospun coPAN nanofibers and offer opportunities for the preparation of high-performance carbon nanofibers.

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references

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