自愈
材料科学
卡拉胶
自愈材料
纳米技术
溶胶凝胶
医学
生物化学
化学
替代医学
病理
作者
Jing Zhao,Hongjuan Wang,Xiujuan Song,Yaoyao Sun,Xiuling Zhang,Junping Zheng,Ruofei Hu
出处
期刊:Nano Energy
[Elsevier]
日期:2024-04-01
卷期号:: 109687-109687
被引量:1
标识
DOI:10.1016/j.nanoen.2024.109687
摘要
Preparation of high performance and recyclable gels remain a challenge. In this study, a zwitterionic ion poly-[2-(Methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl) ammonium hydroxide (PDMAPS) network was constructed in renewable polysaccharide carrageenan to obtain CMM gel. The multiple reversible cross-linking network in CMM gel was engineered by molecular-level multi-dynamic interactions including hydrogen bonds among the molecular chains, two-dimensional MXene and tannic acid (TA), as well as electrostatic interaction. CMM gels exhibited enhanced mechanical strain (~1880%), low-temperature resistance, self-healing performance (~95%), recyclable property, and antibacterial ability. CMM gel can be directly served as a strain sensor with short responsive time to accurately discern subtle and macro bodily motions, handwriting and personal physiological state, even after self-healing and recycling. Additionally, CMM gel can be used as solid electrolyte with polyaniline(PANI) on both sides to obtain sandwich structure CMM-PANI gel, which can be fabricated as all-solid state capacitor with high area specific capacitance of 478 mF/cm2 at 2 mA/cm2. Furthermore, a self-powered sensing device was assembled by the combination of the CMM gel and the capacitor, which demonstrates the sensing performance on various physical activities. This study gives an essential strategy for designing and fabricating self-healing and recyclable gels, and opens up new avenues for the practical application of gels.
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