Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 138, Issue 48, Pages -Publisher
WILEY
DOI: 10.1002/app.51367
Keywords
biomaterials; cellulose and other wood products; sensors and actuators
Categories
Funding
- Hainan Provincial Joint Project of Sanya Yazhou Bay Science and Technology City [520LH017]
- Fundamental Research Funds for the Central Universities of China [WUT: 2020IB030]
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The use of TOCN/PPy as a substrate for preparing E-skin with excellent sensing and mechanical properties, a high sensitivity of 3.13 kPa(-1), ultrafast response time, ultra-low detection limit, good stability, and high mechanical strength. This suggests that TOCN/PPy E-skin has great potential in the fields of artificial intelligence and health monitoring.
In recent years, the wearable electronic skin (E-skin) has attracted more and more attention due to high sensitivity, good portability and flexibility. In this work, we used the 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO)-oxidized cellulose nanofibril (TOCN) as the substrate, and used the in-situ polymerization method to introduce polypyrrole (PPy) into the TOCN substrate. Then, the nylon gauze was used as microstructure template to prepare a TOCN/PPy E-skin with a surface microstructure. This E-skin possessed excellent sensing and mechanical properties. In the pressure range of 0-600 Pa, the sensitivity of E-skin was 3.13 kPa(-1). In addition, the E-skin exhibited ultrafast response/recovery time (<= 10 ms), ultralow detection limit of 0.3 Pa, good stability (>9000 cycles) and mechanical strength of up to 117 MPa. Therefore, the TOCN/PPy E-skin has broad development prospects in the fields of artificial intelligence and health monitoring.
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