Ultra-stretchable hydrogels with hierarchical hydrogen bonds
Hydrogels are attractive for applications in intelligent soft materials and flexible electronics. Herein, we report a new hydrogel with a hierarchical hydrogen bond system consisting of (1) weak hydrogen bonds between N , N -dimethylacrylamides (DMAA) and acrylic acids (AAc) and (2) strong multiple...
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| Veröffentlicht in: | Scientific reports 2020-07, Vol.10 (1), p.11727-11727, Article 11727 |
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| creator | You, Yujing Yang, Jian Zheng, Qiang Wu, Ningkun Lv, Zhongda Jiang, Zhiqiang |
| description | Hydrogels are attractive for applications in intelligent soft materials and flexible electronics. Herein, we report a new hydrogel with a hierarchical hydrogen bond system consisting of (1) weak hydrogen bonds between
N
,
N
-dimethylacrylamides (DMAA) and acrylic acids (AAc) and (2) strong multiple hydrogen bonds between 2-ureido-4[1
H
]-pyrimidinone units. By optimizing the ratios of DMAA and AAc and the balance of weak and strong hydrogen bonds, the hydrogels have unique properties. The transparent hydrogels have tunable Young’s modulus (70–1,250 kPa) and are highly stretchable (up to 4,340% strain), tough (fracture energies of 10.8 kJ/m
2
, matching natural rubber) and insensitive to notches when it is highly stretched (λ = 19.6). |
| doi_str_mv | 10.1038/s41598-020-68678-9 |
| format | Article |
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N
,
N
-dimethylacrylamides (DMAA) and acrylic acids (AAc) and (2) strong multiple hydrogen bonds between 2-ureido-4[1
H
]-pyrimidinone units. By optimizing the ratios of DMAA and AAc and the balance of weak and strong hydrogen bonds, the hydrogels have unique properties. The transparent hydrogels have tunable Young’s modulus (70–1,250 kPa) and are highly stretchable (up to 4,340% strain), tough (fracture energies of 10.8 kJ/m
2
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N
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N
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H
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2
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Herein, we report a new hydrogel with a hierarchical hydrogen bond system consisting of (1) weak hydrogen bonds between
N
,
N
-dimethylacrylamides (DMAA) and acrylic acids (AAc) and (2) strong multiple hydrogen bonds between 2-ureido-4[1
H
]-pyrimidinone units. By optimizing the ratios of DMAA and AAc and the balance of weak and strong hydrogen bonds, the hydrogels have unique properties. The transparent hydrogels have tunable Young’s modulus (70–1,250 kPa) and are highly stretchable (up to 4,340% strain), tough (fracture energies of 10.8 kJ/m
2
, matching natural rubber) and insensitive to notches when it is highly stretched (λ = 19.6).</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>32678203</pmid><doi>10.1038/s41598-020-68678-9</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | 639/301/923/1027 639/301/923/1028 Humanities and Social Sciences Hydrogels Hydrogen Hydrogen bonding Hydrogen bonds Mechanical properties multidisciplinary Science Science (multidisciplinary) |
| title | Ultra-stretchable hydrogels with hierarchical hydrogen bonds |
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