自愈水凝胶
生物相容性
胶粘剂
极限抗拉强度
丙烯酸
化学
自愈
共聚物
纳米复合材料
材料科学
纳米技术
化学工程
粘附
聚合物
高分子化学
复合材料
有机化学
病理
工程类
替代医学
医学
图层(电子)
作者
Xiaoqiang Jin,Huihong Jiang,Zhiming Zhang,Yingming Yao,Xiaojiong Bao,Qiaoling Hu
标识
DOI:10.1016/j.carbpol.2020.117316
摘要
For conductive hydrogels applied in biosensors, wearable devices and so forth, multifunctionality is an inevitable trend of development to meet various practical requirements and enhance human experience. Herein, inspired by nanocomposite, double-network (DN) and mussel chemistry, a new Graphene [email protected]/Alginate/Poly(acrylic acid-co-acrylamide) [[email protected]/Alginate/P(AAc-co-AAm)] hydrogel was fabricated through one-pot in-situ radical copolymerization. [email protected] nanofillers, prepared via GO confined DA polymerization, imparted the hydrogel with remarkable adhesiveness. Alginate/P(AAc-co-AAm) DN matrix, physically and chemically crosslinked by Fe3+ and N,N'-Methylenebisacrylamide, made hydrogels ultrastretchable, self-healing and biocompatible. With contents of DA and alginate accurately regulated, the tensile strength, elongation, adhesion strength and conductivity of the optimal hydrogel could reach 320.2 kPa, 1198 %, 36.9 kPa and 3.24 ± 0.12 S/m, respectively. What’s more notable was that the synergistic integration of repeatable adhesiveness, strain sensitivity, use stability, self-healing ability and biocompatibility provided such hydrogels with tremendous possibility of practical application for strain sensors.
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