Journal
CHEMICAL ENGINEERING JOURNAL
Volume 392, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2019.123672
Keywords
Multi-functional flexible sensor; Collagen aggregates; Leather solid waste; Polyaniline; Multi-walled carbon nanotube
Categories
Funding
- National Natural Science Foundation of China [21808133, 21804084]
- National Key R&D Program of China [2017YFB0308502]
- Scientific Research Foundation for Young Scholars [2017BT-32]
- Shaanxi University of Science Technology
- Special Research Program of Shaanxi Provincial Department of Education [18JK0108]
- Xianyang Science and Technology Project [2018k02-28]
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A novel multi-functional sensor was fabricated with mull-layer and internal 3D network structure via two-step assembly that mimicked the natural hierarchical skin model. The collagen aggregates (CA) derived from chromium-containing waste leather were used as the substrate while polyaniline (PANi)-acidified mull-walled carbon nanotube (H-MWNTs) composites were employed as the conductive materials (P-M). The multi-functional flexible sensor was assembled resulting in mull-dimensional recognition ability (including compressing (gauge factor (GF) = 5.2), bending (GF = 9.2), and twisting strains), fast response (110 ms), and broad dynamic response range (28 Pa-100 KPa). Notably, the multi-functional sensor had superior sensing performance to humidity and comfortable wearing performance. Owing to these merits, the fabricated sensor with multi-functionality and intelligence can potentially act as the artificial skin for robot hand to detect weak pressure and humidity changes, displaying great promise for applications in the fields of real-time health monitoring, biomedical, and intelligent robots.
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