Issue 7, 2020

An autonomously healable, highly stretchable and cyclically compressible, wearable hydrogel as a multimodal sensor

Abstract

Stretchable, self-healable, conductive hydrogels have received increasing attention due to their broad range of applications, such as wearable devices and ionic skin. However, severe challenges remain in integrating fatigue resistance, favorable self-healing, and stretchable and compressible efficiency into a hydrogel. Herein, a highly stretchable, compressible, self-healable somatosensory platform was fabricated by blending Fe3+ ions with polyvinyl alcohol acetoacetate (PVAA)/polyacrylamide (PAM) hydrogel to form a double network hydrogel, which combined chemical coordination and physical crosslinking in one system. In this system, the PAM network offered high stretchability and compressibility to the hydrogel. Meanwhile, the coordination of the Fe3+/PVAA network provided ionic conductivity and self-healing ability. The resulting hydrogel exhibits prominent stretchability (>700%), high sensitivity, high healing efficiency (80% within 24 h) and excellent fatigue resistance. Therefore, the hydrogel could be used as a potential artificial ionic skin including strain and pressure sensors to directly monitor human motion.

Graphical abstract: An autonomously healable, highly stretchable and cyclically compressible, wearable hydrogel as a multimodal sensor

Supplementary files

Article information

Article type
Paper
Submitted
18 Nov 2019
Accepted
08 Dec 2019
First published
24 Dec 2019

Polym. Chem., 2020,11, 1327-1336

An autonomously healable, highly stretchable and cyclically compressible, wearable hydrogel as a multimodal sensor

J. Tie, L. Rong, H. Liu, B. Wang, Z. Mao, L. Zhang, Y. Zhong, X. Feng, X. Sui and H. Xu, Polym. Chem., 2020, 11, 1327 DOI: 10.1039/C9PY01737B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements