聚乙烯醇
材料科学
纤维素
羟乙基纤维素
极限抗拉强度
化学工程
复合材料
傅里叶变换红外光谱
二甲基亚砜
自愈水凝胶
高分子化学
有机化学
工程类
化学
作者
Xinmin Huang,Xiang Ao,Lianhe Yang,Chengwei Wang,Meng Li
标识
DOI:10.1080/10584587.2022.2143185
摘要
Hydroxyethyl cellulose, polyvinyl alcohol (PVA) and dimethyl sulfoxide (DMSO) were used as raw materials. Ion-conducting hydrogels with different hydroxyethyl cellulose contents were prepared by blending and freezing-thawing methods. Hydrogels were characterized by Fourier transform infrared spectrometer, universal material testing machine, LCR digital bridge and scanning electron microscope (SEM). The results show that when the content of hydroxyethyl cellulose is 1.5 wt%, the mechanical properties of the hydrogel are improved, the elongation at break reaches 340%, and the tensile strength reaches 239 KPa. The relative resistance of the hydrogel will grows with the increase of tensile strain. The ionic conductive hydrogel was assembled into a strain sensor to monitor the angle change of finger bending. The hydrogel can also be assembled to form a self-powered battery, and the voltage of the self-powered battery can reach 0.839 V. This indicates that the hydrogel has potential applications in flexible sensors.
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