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Superstretchable, yet stiff, fatigue-resistant ligament-like elastomers

Ligaments are flexible and stiff tissues around joints to support body movements, showing superior toughness and fatigue-resistance. Such a combination of mechanical properties is rarely seen in synthetic elastomers because stretchability, stiffness, toughness, and fatigue resistance are seemingly i...

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Autores principales: Li, Mengxue, Chen, Lili, Li, Yiran, Dai, Xiaobin, Jin, Zhekai, Zhang, Yucheng, Feng, Wenwen, Yan, Li-Tang, Cao, Yi, Wang, Chao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9046184/
https://www.ncbi.nlm.nih.gov/pubmed/35477583
http://dx.doi.org/10.1038/s41467-022-30021-3
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author Li, Mengxue
Chen, Lili
Li, Yiran
Dai, Xiaobin
Jin, Zhekai
Zhang, Yucheng
Feng, Wenwen
Yan, Li-Tang
Cao, Yi
Wang, Chao
author_facet Li, Mengxue
Chen, Lili
Li, Yiran
Dai, Xiaobin
Jin, Zhekai
Zhang, Yucheng
Feng, Wenwen
Yan, Li-Tang
Cao, Yi
Wang, Chao
author_sort Li, Mengxue
collection PubMed
description Ligaments are flexible and stiff tissues around joints to support body movements, showing superior toughness and fatigue-resistance. Such a combination of mechanical properties is rarely seen in synthetic elastomers because stretchability, stiffness, toughness, and fatigue resistance are seemingly incompatible in materials design. Here we resolve this long-standing mismatch through a hierarchical crosslinking design. The obtained elastomer can endure 30,000% stretch and exhibit a Young’s modulus of 18 MPa and toughness of 228 MJ m(−3), outperforming all the reported synthetic elastomers. Furthermore, the fatigue threshold is as high as 2,682 J m(−2), the same order of magnitude as the ligaments (~1,000 J m(−2)). We reveal that the dynamic double-crosslinking network composed of Li(+)-O interactions and PMMA nanoaggregates allows for a hierarchical energy dissipation, enabling the elastomers as artificial ligaments in soft robotics.
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spelling pubmed-90461842022-04-29 Superstretchable, yet stiff, fatigue-resistant ligament-like elastomers Li, Mengxue Chen, Lili Li, Yiran Dai, Xiaobin Jin, Zhekai Zhang, Yucheng Feng, Wenwen Yan, Li-Tang Cao, Yi Wang, Chao Nat Commun Article Ligaments are flexible and stiff tissues around joints to support body movements, showing superior toughness and fatigue-resistance. Such a combination of mechanical properties is rarely seen in synthetic elastomers because stretchability, stiffness, toughness, and fatigue resistance are seemingly incompatible in materials design. Here we resolve this long-standing mismatch through a hierarchical crosslinking design. The obtained elastomer can endure 30,000% stretch and exhibit a Young’s modulus of 18 MPa and toughness of 228 MJ m(−3), outperforming all the reported synthetic elastomers. Furthermore, the fatigue threshold is as high as 2,682 J m(−2), the same order of magnitude as the ligaments (~1,000 J m(−2)). We reveal that the dynamic double-crosslinking network composed of Li(+)-O interactions and PMMA nanoaggregates allows for a hierarchical energy dissipation, enabling the elastomers as artificial ligaments in soft robotics. Nature Publishing Group UK 2022-04-27 /pmc/articles/PMC9046184/ /pubmed/35477583 http://dx.doi.org/10.1038/s41467-022-30021-3 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Li, Mengxue
Chen, Lili
Li, Yiran
Dai, Xiaobin
Jin, Zhekai
Zhang, Yucheng
Feng, Wenwen
Yan, Li-Tang
Cao, Yi
Wang, Chao
Superstretchable, yet stiff, fatigue-resistant ligament-like elastomers
title Superstretchable, yet stiff, fatigue-resistant ligament-like elastomers
title_full Superstretchable, yet stiff, fatigue-resistant ligament-like elastomers
title_fullStr Superstretchable, yet stiff, fatigue-resistant ligament-like elastomers
title_full_unstemmed Superstretchable, yet stiff, fatigue-resistant ligament-like elastomers
title_short Superstretchable, yet stiff, fatigue-resistant ligament-like elastomers
title_sort superstretchable, yet stiff, fatigue-resistant ligament-like elastomers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9046184/
https://www.ncbi.nlm.nih.gov/pubmed/35477583
http://dx.doi.org/10.1038/s41467-022-30021-3
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