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Nature communications
May 25, 2023;14 (1): 3019.

Fabricating strong and tough aramid fibers by small addition of carbon nanotubes.

Jiajun Luo, Yeye Wen, Xiangzheng Jia, Xudong Lei, Zhenfei Gao, Muqiang Jian, Zhihua Xiao, Lanying Li, Jiangwei Zhang, Tao Li, Hongliang Dong, Xianqian Wu, Enlai Gao, Kun Jiao, Jin Zhang
Author Information
  1. Jiajun Luo: Beijing National Laboratory for Molecular Sciences, School of Materials Science and Engineering, College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Beijing Science and Engineering Center for Nanocarbons, Peking University, 100871, Beijing, China.
  2. Yeye Wen: Beijing National Laboratory for Molecular Sciences, School of Materials Science and Engineering, College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Beijing Science and Engineering Center for Nanocarbons, Peking University, 100871, Beijing, China.
  3. Xiangzheng Jia: Department of Engineering Mechanics, School of Civil Engineering, Wuhan University, 430072, Wuhan, China. ORCID
  4. Xudong Lei: Institute of Mechanics, Chinese Academy of Sciences, 100190, Beijing, China.
  5. Zhenfei Gao: Beijing Graphene Institute (BGI), 100095, Beijing, China.
  6. Muqiang Jian: Beijing Graphene Institute (BGI), 100095, Beijing, China.
  7. Zhihua Xiao: Beijing National Laboratory for Molecular Sciences, School of Materials Science and Engineering, College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Beijing Science and Engineering Center for Nanocarbons, Peking University, 100871, Beijing, China.
  8. Lanying Li: China Bluestar Chengrand Chemical Co., Ltd, 611430, Chengdu, China.
  9. Jiangwei Zhang: Science Center of Energy Material and Chemistry, College of Chemistry and Chemical Engineering, Inner Mongolia University, 010021, Hohhot, China. ORCID
  10. Tao Li: Beijing Graphene Institute (BGI), 100095, Beijing, China.
  11. Hongliang Dong: Center for High Pressure Science and Technology Advanced Research, 201203, Shanghai, China.
  12. Xianqian Wu: Institute of Mechanics, Chinese Academy of Sciences, 100190, Beijing, China. wuxianqian@imech.ac.cn. ORCID
  13. Enlai Gao: Department of Engineering Mechanics, School of Civil Engineering, Wuhan University, 430072, Wuhan, China. enlaigao@whu.edu.cn. ORCID
  14. Kun Jiao: Beijing National Laboratory for Molecular Sciences, School of Materials Science and Engineering, College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Beijing Science and Engineering Center for Nanocarbons, Peking University, 100871, Beijing, China. jiaokun-cnc@pku.edu.cn.
  15. Jin Zhang: Beijing National Laboratory for Molecular Sciences, School of Materials Science and Engineering, College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Beijing Science and Engineering Center for Nanocarbons, Peking University, 100871, Beijing, China. jinzhang@pku.edu.cn. ORCID
PMID: 37230970 DOI: 10.1038/s41467-023-38701-4

Abstract

Synthetic high-performance fibers present excellent mechanical properties and promising applications in the impact protection field. However, fabricating fibers with high strength and high toughness is challenging due to their intrinsic conflicts. Herein, we report a simultaneous improvement in strength, toughness, and modulus of heterocyclic aramid fibers by 26%, 66%, and 13%, respectively, via polymerizing a small amount (0.05 wt%) of short aminated single-walled carbon nanotubes (SWNTs), achieving a tensile strength of 6.44 ± 0.11 GPa, a toughness of 184.0 ± 11.4 MJ m, and a Young's modulus of 141.7 ± 4.0 GPa. Mechanism analyses reveal that short aminated SWNTs improve the crystallinity and orientation degree by affecting the structures of heterocyclic aramid chains around SWNTs, and in situ polymerization increases the interfacial interaction therein to promote stress transfer and suppress strain localization. These two effects account for the simultaneous improvement in strength and toughness.

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Grants

  1. 52021006/National Natural Science Foundation of China (National Science Foundation of China)
  2. 51720105003/National Natural Science Foundation of China (National Science Foundation of China)
  3. 21790052/National Natural Science Foundation of China (National Science Foundation of China)
  4. 52102035/National Natural Science Foundation of China (National Science Foundation of China)
  5. 12272391/National Natural Science Foundation of China (National Science Foundation of China)
  6. 12232020/National Natural Science Foundation of China (National Science Foundation of China)
  7. 2018YFA0703502/Beijing Municipal Science and Technology Commission
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