木质素
自愈水凝胶
生物相容性
胶粘剂
材料科学
聚丙烯酰胺
化学工程
纳米技术
化学
高分子化学
有机化学
图层(电子)
工程类
冶金
作者
Huijuan Xiu,Haizhi Zhao,Lei Dai,Jingyu Li,Zhi Wang,Yuxin Cui,Yurou Bai,Xuejun Zheng,Jinbao Li
标识
DOI:10.1016/j.ijbiomac.2022.05.168
摘要
The fabrication of hydrogel for sensing purposes remains to be a challenge since the hydrogel needs to have both good mechanical strength and adhesiveness. This work reports a robust and adhesive hydrogel mainly constructed with AgNPs@lignin, polyacrylamide (PAM) and sodium alginate (SA). The silver nanoparticles (AgNPs) were in-situ generated via the reaction between lignin and silver ammonia ([Ag(NH3)2]+). The resultant lignin hybrid hydrogel exhibited a stress, strain and tearing energy up to 0.055 MPa, 1000% and 250 J·m-2, respectively. Furthermore, the hydrogel adhered to different materials with an adhesion energy of higher than 230 J·m-2. This hydrogel was demonstrated to be an ideal sensing material since it could detect both large-scale motions and tiny physiological signals including breathing and pulse. The hydrogel also exhibited good antibacterial performance and biocompatibility. This work provides a good example to design a lignin-based high-performance hydrogel material for sensing purposes.
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