Journal
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
Volume 14, Issue -, Pages 555-566Publisher
ELSEVIER
DOI: 10.1016/j.jmrt.2021.06.088
Keywords
Hydrogel; Hemicellulose; Polypyrrole; Anti-freezing; Water-retaining; Sensor
Funding
- Fundamental Research Funds for the Central Universities [2021ZY22]
- National Natural Science Foundation of China [31870567]
- Ministry of Education, China-111 Project [BP0820033]
Ask authors/readers for more resources
This study introduces a novel stretchable and anti-freezing composite hydrogel with good conductivity and water retention capabilities, suitable for epidermal strain sensors and demonstrating potential application in monitoring human motion.
High-performance conductive hydrogels are desired for the development of flexible wearable sensors. However, it remains a challenge to simultaneously realize high stretchable, freezing tolerance, and attractive conductivity through a simple approach. In this work, we present stretchable, water retention, anti-freezing, and conductive hemi-cellulose/polypyrrole (H/PPY) composite hydrogels for application in epidermal strain sensors via freezing-thawing method. The composite hydrogels were obtained using hemicellulose as a hydrophilic carrier and polypyrrole as a conductive matrix. The freezing and thawing temperatures of the hydrogels decreased and the conductivity increased benefiting from the introduction of glycerol and NaCl. The hydrogels had good mechanical properties, remodeling ability and water retention after storage for 7 days. In addition, the strain sensors assembled by hydrogels accurately monitored the signals of human motions with good strain sensing durability. It is expected that the as-prepared hydrogels have the potential to be applied in the fields of wearable devices. (c) 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available