DataVXACS Applied Polymer MaterialsPaper
journal article·2023-09-08

Self-Healable, Superhydrophobic, and Flexible Strain Sensor Based on Polyurethane Composite for Underwater Sensing

Wei-Chen Gao, Chen-Chen Lu, Hong-Wei Li, Wei Wu, Robert K. Y. Li, Hui Zhao

ACS Applied Polymer Materials· Volume 5· Issue 9
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Source abstract

Abstract

As one of the most important wearable devices, flexible sensors have attracted the attention of researchers because they can be installed onto the skin of a human to monitor their movement, and they have the advantages of excellent flexibility and comfort. However, most of the devices cannot be used in an underwater environment, and they may be destroyed by mechanical forces in harsh working conditions. There are many approaches to solve these issues, but unfortunately, less research has been carried out to solve them simultaneously. To overcome these challenges, this research proposes a method for developing a sensor integrating superhydrophobicity and self-healing ability. The experimental results demonstrated that the sensor exhibited excellent performance with a water contact angle of 153.6°, a gauge factor of 145, and more than 10 000 cycle stability. In addition, it could self-heal at 50 °C after scratch, and the self-healing efficiency was 85.6%. It was capable of monitoring various movements, such as coughing, speaking, the bending and stretching of knees, elbows, and fingers. Furthermore, this device can be employed to monitor the human movement of swimming, and it can also realize underwater vibration and impact of tiny droplets. This work provides a valuable design strategy for electrical devices that can be widely applied in various fields.
Source: openalex_inverted_index · Quality: baseline

Research context

Composites

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Surface Modification and Superhydrophobicity · Tactile and Sensory Interactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China

Jihua Laboratory, Foshan 528200, China

Department of Materials Science and Engineering, City University of Hong Kong, Kowloon 999077, Hong Kong

State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China

Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, College of Materials and Chemical Engineering, Hezhou University, Hezhou 542899, China

Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi Minzu University, Nanning 530006, China

Funding

State Key Laboratory of Biocatalysis and Enzyme Engineering · China Postdoctoral Science Foundation · Natural Science Foundation of Guangxi Province · National Natural Science Foundation of China · Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization · Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products

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