Tough, Self-Healing Hydrogels Capable of Ultrafast Shape Changing
| Autor: | Zhen Jiang, Luke A. Connal, Broden Diggle, India C G Shackleford |
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| Rok vydání: | 2019 |
| Předmět: |
Toughness
Thermal hysteresis Materials science Mechanical Engineering Soft robotics Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Fatigue resistance Mechanics of Materials Self-healing Self-healing hydrogels Water uptake General Materials Science 0210 nano-technology Ultrashort pulse |
| Zdroj: | Advanced materials (Deerfield Beach, Fla.). 31(48) |
| ISSN: | 1521-4095 |
| Popis: | Achieving multifunctional shape-changing hydrogels with synergistic and engineered material properties is highly desirable for their expanding applications, yet remains an ongoing challenge. The synergistic design of multiple dynamic chemistries enables new directions for the development of such materials. Herein, a molecular design strategy is proposed based on a hydrogel combining acid-ether hydrogen bonding and imine bonds. This approach utilizes simple and scalable chemistries to produce a doubly dynamic hydrogel network, which features high water uptake, high strength and toughness, excellent fatigue resistance, fast and efficient self-healing, and superfast, programmable shape changing. Furthermore, deformed shapes can be memorized due to the large thermal hysteresis. This new type of shape-changing hydrogel is expected to be a key component in future biomedical, tissue, and soft robotic device applications. |
| Databáze: | OpenAIRE |
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