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Highly stretchable, self-healing, and degradable ionic conductive cellulose hydrogel for human motion monitoring. Int J Biol Macromol 2022; 223:1530-1538. [PMID: 36402382 DOI: 10.1016/j.ijbiomac.2022.11.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 09/16/2022] [Accepted: 11/02/2022] [Indexed: 11/18/2022]
Abstract
Self-healing biomass-based conductive hydrogels are applied as flexible strain sensors for wearable devices and human movement monitoring. Cellulose is the most abundant biomass-based materials and exhibits excellent toughness, dispersion and degradability. In this paper, nanocellulose crystals (NCCs) prepared from sisal, used as reinforcing fillers were coated with tannic acid (TA) to prepare inexpensive bio-nanocomposite hydrogels that also included polyvinyl alcohol, okra polysaccharide (OP), and borax. These hydrogels exhibit excellent self-healing and mechanical properties with the maximum elongation, toughness, and self-healing efficiency (9 min) of 1426.2 %, 264.4 kJ/m3, and 62.1 %, respectively. A fabricated hydrogel strain sensor was successfully used to detect and monitor various human movements such as wrist bending, elbow bending, and slight changes in facial expression. In addition, this sensor possessed excellent durability and good working stability after repeated circulation. The nanocomposite hydrogel synthesized in this work utilized natural polysaccharide to manufacture flexible functional materials with good application prospects in the field of flexible sensors.
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Liu G, Guo M, Xue S, Yang X, Wang L, Zhao C, Xiang D, Li H, Lai J, Li Z, Wu Y. Stretchable, conductive poly(acrylamide‐
co
‐maleic acid)/triethylene glycol/
NaCl
double‐crosslinked organohydrogel with excellent antifreezing and sensing properties. J Appl Polym Sci 2022. [DOI: 10.1002/app.52797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Guanfei Liu
- School of New Energy and Materials, State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University Chengdu China
| | - Meiling Guo
- School of New Energy and Materials, State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University Chengdu China
| | - Shishan Xue
- School of Chemistry and Chemical Engineering Mianyang Normal University Mianyang China
| | - Xi Yang
- School of New Energy and Materials, State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University Chengdu China
| | - Li Wang
- School of New Energy and Materials, State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University Chengdu China
| | - Chuanxia Zhao
- School of New Energy and Materials, State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University Chengdu China
| | - Dong Xiang
- School of New Energy and Materials, State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University Chengdu China
| | - Hui Li
- School of New Energy and Materials, State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University Chengdu China
| | - Jingjuan Lai
- School of New Energy and Materials, State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University Chengdu China
| | - Zhenyu Li
- School of New Energy and Materials, State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University Chengdu China
| | - Yuanpeng Wu
- School of New Energy and Materials, State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University Chengdu China
- The Center of Functional Materials for Working Fluids of Oil and Gas Field, Sichuan Engineering Technology Research Center of Basalt Fiber Composites Development and Application Southwest Petroleum University Chengdu China
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Chen K, Liu M, Wang F, Hu Y, Liu P, Li C, Du Q, Yu Y, Xiao X, Feng Q. Highly Transparent, Self-Healing, and Self-Adhesive Double Network Hydrogel for Wearable Sensors. Front Bioeng Biotechnol 2022; 10:846401. [PMID: 35198546 PMCID: PMC8859421 DOI: 10.3389/fbioe.2022.846401] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 01/17/2022] [Indexed: 12/21/2022] Open
Abstract
Hydrogel-based flexible electronic devices are essential in future healthcare and biomedical applications, such as human motion monitoring, advanced diagnostics, physiotherapy, etc. As a satisfactory flexible electronic material, the hydrogel should be conductive, ductile, self-healing, and adhesive. Herein, we demonstrated a unique design of mechanically resilient and conductive hydrogel with double network structure. The Ca2+ crosslinked alginate as the first dense network and the ionic pair crosslinked polyzwitterion as the second loose network. With the synthetic effect of these two networks, this hydrogel showed excellent mechanical properties, such as superior stretchability (1,375%) and high toughness (0.57 MJ/m3). At the same time, the abundant ionic groups of the polyzwitterion network endowed our hydrogel with excellent conductivity (0.25 S/m). Moreover, due to the dynamic property of these two networks, our hydrogel also performed good self-healing performance. Besides, our experimental results indicated that this hydrogel also had high optical transmittance (92.2%) and adhesive characteristics. Based on these outstanding properties, we further explored the utilization of this hydrogel as a flexible wearable strain sensor. The data strongly proved its enduring accuracy and sensitivity to detect human motions, including large joint flexion (such as finger, elbow, and knee), foot planter pressure measurement, and local muscle movement (such as eyebrow and mouth). Therefore, we believed that this hydrogel had great potential applications in wearable health monitoring, intelligent robot, human-machine interface, and other related fields.
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Affiliation(s)
- Kai Chen
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, China
- School of Resources and Chemical Engineering, Sanming University, Sanming, China
| | - Mingxiang Liu
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, China
| | - Feng Wang
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, China
| | - Yunping Hu
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, China
| | - Pei Liu
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, China
| | - Cong Li
- Department of Biomaterial, College of Life Sciences, Mudanjiang Medical University, Mudanjiang, China
| | - Qianqian Du
- Department of Biomaterial, College of Life Sciences, Mudanjiang Medical University, Mudanjiang, China
| | - Yongsheng Yu
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
- *Correspondence: Qian Feng, ; Xiufeng Xiao, ; Yongsheng Yu,
| | - Xiufeng Xiao
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, China
- *Correspondence: Qian Feng, ; Xiufeng Xiao, ; Yongsheng Yu,
| | - Qian Feng
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, China
- Key Laboratory of Biorheological Science and Technology, Ministry of Education College of Bioengineering, Chongqing University, Chongqing, China
- *Correspondence: Qian Feng, ; Xiufeng Xiao, ; Yongsheng Yu,
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