Surfaces, Interfaces, and Applications
- Zhongyuan Tian
Zhongyuan Tian
State Key Laboratory of Organic−Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
More by Zhongyuan Tian
- Shilin Luo
Shilin Luo
State Key Laboratory of Organic−Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
More by Shilin Luo
- Shangzhi Yue
Shangzhi Yue
State Key Laboratory of Organic−Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
More by Shangzhi Yue
- Zheng Li
Zheng Li
State Key Laboratory of Organic−Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
More by Zheng Li
- Dan Yang*
Dan Yang
State Key Laboratory of Organic−Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Center for Nanomaterials and Nanocomposites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
*Email: [emailprotected]
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ACS Applied Materials & Interfaces
Cite this: ACS Appl. Mater. Interfaces 2025, XXXX, XXX, XXX-XXX
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https://pubs.acs.org/doi/10.1021/acsami.5c04162
Published April 22, 2025
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Hydrogels have attracted increasing attention in wearable sensors, but preparing underwater hydrogel sensors with excellent anti-swelling and self-healing properties is still challenging. Herein, an anti-swelling and self-healing hydrogel is prepared by grafting poly(acrylic acid) with hydrophobic lauryl methacrylate, as well as constructing a second network and multiple molecular interactions (abbreviated as PALCF). The introduced hydrophobic long alkyl chains and the increased cross-linking density of the hydrogel result in a swelling ratio of only 0.04% after immersion in water for 15 days. Due to abundant metal coordination and hydrogen bonds, the PALCF hydrogel exhibits a high tensile stress of 0.60 MPa and a self-healing efficiency reaching 96.0% after self-healing at 60 °C for 2 min. Based on the piezoresistive effect, the PALCF hydrogel is directly used as an underwater strain sensor with a high sensitivity (GF = 2.24) to control underwater vehicles for rescue implementation. Furthermore, two self-powered triboelectric nanogenerator sensors with contact and non-contact models are constructed based on PALCF hydrogels for underwater communication, capable of sending out SOS messages and drowning alarms in emergency. The proposed underwater sensors with drowning warning and rescuing functions have the potential for use in drowning prevention, human–machine interfaces, and underwater communication system.
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© 2025 American Chemical Society
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- Absorption
- Hydrogels
- Nanogenerators
- Self healing materials
- Sensors
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ACS Applied Materials & Interfaces
Cite this: ACS Appl. Mater. Interfaces 2025, XXXX, XXX, XXX-XXX
Click to copy citationCitation copied!
Published April 22, 2025
Publication History
Received
Accepted
Revised
Published
online
© 2025 American Chemical Society
Request reuse permissions
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