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231226s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202306129
|2 doi
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|a pubmed24n1422.xml
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|a DE-627
|b ger
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|e rakwb
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|a eng
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|a Yan, Dan
|e verfasserin
|4 aut
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|a Carbon Nanotube-Directed 7 GPa Heterocyclic Aramid Fiber and Its Application in Artificial Muscles
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 29.05.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 Wiley‐VCH GmbH.
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|a Poly(p-phenylene-benzimidazole-terephthalamide) (PBIA) fibers with excellent mechanical properties are widely used in fields that require impact-resistant materials such as ballistic protection and aerospace. The introduction of heterocycles in polymer chains increases their flexibility and makes it easier to optimize the fiber structure. However, the inadequate orientation of polymer chains is one of the main reasons for the large difference between the measured and theoretical mechanical properties of PBIA fibers. Herein, carbon nanotubes (CNTs) are selected as an orientation seed. Their structural features allow CNTs to orient during the spinning process, which can induce an orderly arrangement of polymers and improve the orientation of the fiber microstructure. To ensure the complete 1D topology of long CNTs (≈10 µm), PBIA is used as an efficient dispersant to overcome dispersion challenges. The p-CNT/PBIA fibers (10 µm single-walled carbon nanotube 0.025 wt%) exhibit an increase of 22% in tensile strength and 23% in elongation, with a maximum tensile strength of 7.01 ± 0.31 GPa and a reinforcement efficiency of 893.6. The artificial muscle fabricated using CNT/PBIA fibers exhibits a 34.8% contraction and a 25% lifting of a 2 kg dumbbell, providing a promising paradigm for high-performance organic fibers as high-load smart actuators
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|a Journal Article
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|a 1D topology
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|a artificial muscles
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|a carbon nanotubes
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|a damage‐free dispersion
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|a heterocyclic aramid fibers
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|a mechanical properties
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|a orientation seed
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|a Luo, Jiajun
|e verfasserin
|4 aut
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|a Wang, Shijun
|e verfasserin
|4 aut
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|a Han, Xiaocang
|e verfasserin
|4 aut
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|a Lei, Xudong
|e verfasserin
|4 aut
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|a Jiao, Kun
|e verfasserin
|4 aut
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|a Wu, Xianqian
|e verfasserin
|4 aut
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|a Qian, Liu
|e verfasserin
|4 aut
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|a Zhang, Xinshi
|e verfasserin
|4 aut
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|a Zhao, Xiaoxu
|e verfasserin
|4 aut
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|a Di, Jiangtao
|e verfasserin
|4 aut
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|a Zhang, Zhong
|e verfasserin
|4 aut
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|a Gao, Zhenfei
|e verfasserin
|4 aut
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| 700 |
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|a Zhang, Jin
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 22 vom: 16. Mai, Seite e2306129
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:36
|g year:2024
|g number:22
|g day:16
|g month:05
|g pages:e2306129
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|u http://dx.doi.org/10.1002/adma.202306129
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