【科研动态】岳衎团队Advanced Materials:一种综合性能优异的多功能离子液体凝胶及其在柔性应变传感器中的应用
新闻动态
【科研动态】岳衎团队Advanced Materials:一种综合性能优异的多功能离子液体凝胶及其在柔性应变传感器中的应用
发布时间:2021-11-09        浏览次数:299

A Transparent, Highly Stretchable, Solvent-Resistant, Recyclable Multifunctional Ionogel with Underwater Self-Healing and Adhesion for Reliable Strain Sensors

Liguo Xu,Zhenkai Huang,Zhishuang Deng,Zhukang Du,Tao Lin Sun,Zi-Hao Guo,Kan Yue*

Advanced Materials,2021,DOI:10.1002/adma.202105306

https://onlinelibrary.wiley.com/doi/10.1002/adma.202105306


Abstract

Ionogels have gained increasing attentions as a flexible conductive material. However, it remains a big challenge to integrate multiple functions into one gel that can be widely applied in various complex scenes. Herein, a kind of multifunctional ionogels with a combination of desirable properties, including transparency, high stretchability, solvent and temperature resistance, recyclability, high conductivity, underwater self-healing ability, and underwater adhesiveness is reported. The ionogels are prepared via one-step photoinitiated polymerization of 2,2,2-trifluoroethyl acrylate and acrylamide in a hydrophobic ionic liquid. The abundant noncovalent interactions including hydrogen bonding and ion–dipole interactions endow the ionogels with excellent mechanical strength, resilience, and rapid self-healing capability at room temperature, while the fluorine-rich polymeric matrix brings in high tolerance against water and various organic solvents, as well as tough underwater adhesion on different substrates. Wearable strain sensors based on the ionogels can sensitively detect and differentiate large body motions, such as bending of limbs, walking and jumping, as well as subtle muscle movements, such as pronunciation and pulse. It is believed that the designed ionogels will show great promises in wearable devices and ionotronics.

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