期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 7, 期 45, 页码 25969-25977出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ta10183g
关键词
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资金
- Fok Ying Tung Education Foundation [161103]
- Open Funds of State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation [PLN1201]
- International Science and Technology Cooperation Project of Chengdu [2017-GH02-00005-HZ]
- Open Project Program of State Key Laboratory of Petroleum Pollution Control [PPC2017008]
- Foundation of Science and Technology from Department of Sichuan Province [2018GZYZF0073]
- Natural Science Foundation of Nanchong City [NC17SY4015]
- Innovative Research Team of Southwest Petroleum University [2017CXTD01]
Stimuli-responsive devices based on stretchable, tough, tolerant, and self-healing hydrogels are critical to fabricate soft actuators but it remains a formidable challenge to develop them. Herein, a novel strategy is demonstrated to meet this challenge by incorporating functionalized boron nitride nanosheets (nano-reinforcing domains) into poly(acrylamide-co-maleic anhydride) (soft elastin matrix) hydrogel followed by glycerol-water post-treatment. The resultant glycerol-hydrogel exhibited high stretchability (strain at break up to 2700%), outstanding tensile strength and toughness (up to 2.8 MPa and 19.3 MJ m(-3), respectively), long-term dehydration resistance to high temperature (60 degrees C), and excellent anti-freezing properties at low temperature (-45 degrees C). Furthermore, excellent self-healing capability was demonstrated by the healing of the hydrogel after three months of storage at temperatures as low as -45 degrees C. By taking advantage of the outstanding dehydration resistance of the glycerol-hydrogel, dual responsive actuating devices were designed based on bilayer hydrogels to grip, release, and drive a ball under different stimuli. Thus, this work not only inspires the design and fabrication of high-performance hydrogels but also broadens their applications in soft robotics, bioactuators, and other areas.
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