期刊
GELS
卷 8, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/gels8120797
关键词
ionogel; double network; chitosan; adhesive; strain sensor
资金
- National Science Foundation of China (NSFC)
- [21872118]
This article introduces a double-network ionogel composed of chitosan and polyacrylic acid, prepared in an ionic liquid. The ionogel exhibits outstanding mechanical and sensing performance, can work in a wide temperature range, and shows potential for practical applications.
A stretchable double-network (DN) ionogel composed of a physically crosslinked network of chitosan (CS) and a chemically crosslinked network of polyacrylic acid (PAA) was prepared in an ionic liquid ([EMIM][OAc]) using a one-step polymerization method. In this ionogel (CS/PAA), the CS and the PAA polymer chains served as backbones, which constructed an interpenetrating DN structure via numerous hydrogen bonds formed through the hydroxyl, amino and carboxyl groups on the polymer chains. The DN structure improves the mechanical properties of the ionogel. Therefore, the CS/PAA DN ionogel exhibited outstanding mechanical performance in many ways: tensile strength up to 2.04 MPa, strain range up to 1046% and the value of toughness up to 8.52 MJ/m(3). The ionogel also showed good self-recovery performance, fatigue resistance, ability to work in a broad temperature range (-20 similar to 80 degrees C) and adhesion properties. As a flexible sensor, the CS/PAA DN ionogel showed high strain sensitivity (gauge factor = 6.235). It can sensitively detect human motion (such as joint-bending, vocal fold vibration, walking gait and other human body motions), revealing the practical application potential of flexible 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