High-strength polyvinyl alcohol-based hydrogel by vermiculite and lignocellulosic nanofibrils for electronic sensing

被引：4
作者：
Hu, Yaxin [2 ]
Luo, Jing [2 ]
Luo, Shipeng [2 ]
Fei, Tong [2 ]
Song, Mingyao [1 ]
Qin, Hengfei [2 ]
机构：
[1] McMaster Univ, DeGroote Sch Business, Hamilton, ON L8S 4M4, Canada
[2] Jiangsu Univ Technol, Sch Resources & Environm Engn, Changzhou 213001, Peoples R China
来源：
E-POLYMERS | 2023年 / 23卷 / 01期
基金：
中国国家自然科学基金;
关键词：
composite hydrogels; lignocellulosic nanofibrils; polyvinyl alcohol; vermiculite; electronics; POLYMER ELECTROLYTE; CELLULOSE; ROBUST;
D O I：
10.1515/epoly-2023-0081
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The use of natural polysaccharides in stretchable hydrogels has attracted more and more attention. However, pure polyvinyl alcohol (PVA) hydrogel has poor mechanical properties and low sensitivity in strain sensors. Composite hydrogels with high tensile properties (the storage modulus of 6,397.8 Pa and the loss modulus of 3,283.9 Pa) and high electrical conductivity (1.57 S & BULL;m(-1)) were prepared using a simple method. The Fe-vermiculite and lignocellulosic nanofibril-based hydrogels were applied as reliable and stable strain sensors that are responsive to environmental stimuli. The prepared hydrogels exhibited excellent ionic conductivity, which satisfied the needs of wrist flexion activity monitoring. The results showed that the PVA/LF0.4 hydrogel has a natural formulation, high mechanical strength, and electrical conductivity, which has great potential for application in artificial electronics.
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页数：11
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