期刊
COMPOSITES PART B-ENGINEERING
卷 211, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2021.108665
关键词
Strain sensor; Bacterial cellulose; Natural rubber; Reliability; Conductive elastomer composite
资金
- National Natural Science Foundation of China [52003121]
- Natural Science Foundation of Jiangsu Province [BK20200501]
- China Postdoctoral Science Foundation [2020M671497, 2020T130300]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD, China)
In this study, a highly stretchable and sensitive strain sensor based on polypyrrole modified bacterial cellulose nanofiber embedded in natural rubber matrix was developed, showing remarkable sensitivity over a broad strain range. The sensor exhibited stable strain sensing behavior under various human motions, providing more opportunities for the design of effective elastomeric conductors in wearable electronic devices.
Recently, wearable strain sensors based on elastomeric conductive composites have attracted tremendous attention in human motions and physical signals detection. However, it is still challenging to achieve good conjunction between broad strain range and high sensitivity performance for a wide range of applications. Here, we construct a highly stretchable and sensitive natural rubber (NR) based strain sensor from polypyrrole modified bacterial cellulose nanofiber (cPPy/BCNF) network. Due to the large aspect ratio and strong interfacial interaction of BCNF templates, cPPy/BCNF could form continuous conductive pathways in NR matrix with an extremely low loading, thus greatly reducing the permeability threshold of the elastomer. Consequently, our strain sensor performs remarkable sensitivity over a broad strain range (0-388%) and long-term reliability (3000 cycles at 60% and 180% strain). Particularly, a high gauge factor of 355.3 recorded in the strain range of 279-388% has been achieved, outperforming most reported NR-based stretchable strain sensor. Meanwhile, the sensor also exhibits stable strain sensing behavior under different amplitude of human motions such as finger, wrist, elbow, and knee joint bending. Our work provides more opportunities for the design of effective elastomeric conductors in the application of wearable electronic devices.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据