Academic Journal
High-Toughness and Intrinsically Self-Healing Cross-Linked Polyurea Elastomers with Dynamic Sextuple H‑Bonds
| العنوان: | High-Toughness and Intrinsically Self-Healing Cross-Linked Polyurea Elastomers with Dynamic Sextuple H‑Bonds |
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| المؤلفون: | Liwei Lu, Jianben Xu, Jiongchao Li, Yuedong Xing, Zhongqun Zhou, Faai Zhang |
| سنة النشر: | 1753 |
| مصطلحات موضوعية: | Biophysics, Biochemistry, Cell Biology, Pharmacology, Biotechnology, Hematology, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, Physical Sciences not elsewhere classified, stress relaxation tests, rapid dynamic exchange, garnered extensive interest, diverse application potential, hindered urea bonds, fewer amide bonds, linked polyurea elastomers, dynamically covalent hubs, high mechanical performance, healing polyurea elastomer, high mechanical toughness, resulting elastomer, performance elastomers, healing efficiency, healing cross, ultrahigh toughness, strain sensors, spider silk, reversibly cross, polymer chain, hubs ) |
| الوصف: | High-performance elastomers that possess a combination of high mechanical toughness and fast healability have garnered extensive interest because of their diverse application potential. Inspired by the unique multiple hydrogen bond (H-bond) structure of spider silk and the rapid dynamic exchange of hindered urea bonds (HUBs), a self-healing polyurea elastomer with ultrahigh toughness was designed by incorporating dynamic sextuple H-bonds and HUBs into the polymer chain. Such a design affords high stretchability (1586%), excellent toughness (45.53 MJ m –3 ), good self-healing efficiency (91.6%), fracture energy (39.68 kJ m –2 ), and recyclability. The high mechanical performance and good healability are attributed to the presence of reversibly cross-linked noncovalent sextuple H-bonds and dynamically covalent HUBs, which have been validated by stress relaxation tests. Meanwhile, by substituting the chain extender adipic dihydrazide with hexamethylenediamine, which possesses a comparable structure but fewer amide bonds, the effect of sextuple H-bonds on elastomers was confirmed. More importantly, when a conductive layer of graphene oxide was applied to the surface of the resulting elastomer, the elastomers exhibited potential applications in strain sensors. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| Relation: | https://figshare.com/articles/journal_contribution/High-Toughness_and_Intrinsically_Self-Healing_Cross-Linked_Polyurea_Elastomers_with_Dynamic_Sextuple_H_Bonds/25272947 |
| DOI: | 10.1021/acs.macromol.3c02202.s002 |
| الاتاحة: | https://doi.org/10.1021/acs.macromol.3c02202.s002 https://figshare.com/articles/journal_contribution/High-Toughness_and_Intrinsically_Self-Healing_Cross-Linked_Polyurea_Elastomers_with_Dynamic_Sextuple_H_Bonds/25272947 |
| Rights: | CC BY-NC 4.0 |
| رقم الانضمام: | edsbas.7AC550F8 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1021/acs.macromol.3c02202.s002 |
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