Spider silk inspired strong yet tough composite hydrogels
Article
Liu, Zhanqi, Chu, Yichen, Wu, Yongchuan, Wu, Haidi, Wang, Yahui, Li, Xiaohao, Wang, Ling, Xue, Huaigui, Shi, Yongqian, Tang, Longcheng, Song, Pingan and Gao, Jiefeng. 2024. "Spider silk inspired strong yet tough composite hydrogels." Composites Science and Technology. 252. https://doi.org/10.1016/j.compscitech.2024.110613
Article Title | Spider silk inspired strong yet tough composite hydrogels |
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ERA Journal ID | 4884 |
Article Category | Article |
Authors | Liu, Zhanqi, Chu, Yichen, Wu, Yongchuan, Wu, Haidi, Wang, Yahui, Li, Xiaohao, Wang, Ling, Xue, Huaigui, Shi, Yongqian, Tang, Longcheng, Song, Pingan and Gao, Jiefeng |
Journal Title | Composites Science and Technology |
Journal Citation | 252 |
Article Number | 110613 |
Number of Pages | 10 |
Year | 2024 |
Publisher | Elsevier |
Place of Publication | United Kingdom |
ISSN | 0266-3538 |
1879-1050 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.compscitech.2024.110613 |
Web Address (URL) | https://www.sciencedirect.com/science/article/abs/pii/S0266353824001830 |
Abstract | Nanofillers are frequently used to improve the mechanical properties of hydrogels, but it is still difficult to develop composite hydrogels with simultaneously enhanced strength, fracture strain, toughness and fatigue threshold at a high water content. Inspired from the unique structure of spider silk, we propose a “macromolecular chain engineered aramid nanofiber (ANF) reinforcement” strategy to prepare strong and fatigue resistance hydrogels with a relatively high water content. ANFs can decrease the crystallinity while increase the stretchability of PVA hydrogels. The stress can be effectively transferred from the soft and ductile polymer chains to the hard and strong ANFs through strong interfacial hydrogen bonding. The tensile strength, fracture strain, toughness and fracture energy of ANF reinforced hydrogels (ARHs) can reach as high as 2.07 ± 0.15 MPa, 1084 ± 116 %, 12.66 ± 1.1 MJ m−3, and 3196 ± 219 J m−2, respectively, at a water content of ∼80 %. Also, ARHs show great crack propagation resistance with the fatigue threshold up to ∼157 J m−2. The bioinspired ARHs with outstanding mechanical properties and anti-swelling performance have promising applications in the field of soft underwater robots, artificial muscles, and so on. |
Keywords | Crack; Nano composites ; Fatigue; Stress/strain curves ; Mechanical properties |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Yangzhou University, China |
Northeastern University, China | |
Anqing Normal University, China | |
Fuzhou University, China | |
Hangzhou Normal University, China | |
Centre for Future Materials |
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