作者：Hongnan Zhu, Yan Cheng, Shuaijie Li, Min Xu, Xuemeng Yang, Tianci Li, Yonggang Du,* Yanfang Liu and
關鍵字：ionogel ，Self-Healing, UV-Shielding
論文來源：期刊
具體來源：International Journal of Biological Macromolecules
發表時間：2023年
Fabricating sustainable ionic skin with multi-functional outstanding performances using
biocompatible natural polymer-based ionogel is highly desired but remains a
great challenge up to now. Herein, a green and recyclable ionogel has been
fabricated by in-situ cross-linking of gelatin with a green bio-based
multifunctional cross-linker of Triglycidyl Naringenin in ionic liquid.
Benefiting from the unique multifunctional chemical crosslinking networks along
with multiple reversible non-covalent interactions, the as-prepared ionogels
exhibit high stretchability (>1000%), excellent elasticity, fast
room-temperature self-healability (>98% healing efficiency at 6 min), and
good recyclability. These ionogels are also highly conductive (up to 30.7 mS/cm
at 150 oC), and exhibit extensive temperature tolerance (-23 to 252
°C) and outstanding UV-shielding ability. As a result, the as-prepared ionogel
can easily be applied as stretchable ionic skin for wearable sensors, which
exhibits high sensitivity, fast response time (102 ms), excellent temperature
tolerance, and stability over 5000 stretching-relaxing cycles. More
importantly, the gelatin-based sensor can be used in signal monitor system for
various human motion real-time detection. This sustainable and multifunctional
ionogel provides a new idea for easy and green preparation of advanced ionic
skins.