文献类型：期刊文献

英文题名：Tough, Adhesive, Self-Healable, and Transparent Ionically Conductive Zwitterionic Nanocomposite Hydrogels as Skin Strain Sensors

作者：Wang, Liufang[1,2,3];Gao, Guorong[2,3];Zhou, Yang[2,3];Xu, Ting[2,3];Chen, Jing[2,3];Wang, Rong[2,3];Zhang, Rui[1];Fu, Jun[2,3]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Cixi Inst Biomed Engn, 1219 Zhongguan West Rd, Ningbo 315201, Zhejiang, Peoples R China;[3]Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Polymers & Composites Div, 1219 Zhongguan West Rd, Ningbo 315201, Zhejiang, Peoples R China

年份：2019

卷号：11

期号：3

起止页码：3506

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20190306392083);WOS:【SCI-EXPANDED(收录号:WOS:000457067300106)】；

基金：This work was supported by the National Natural Science Foundation of China (21574145, 51873224, 21374029), the Natural Science Foundation of Zhejiang Province (LQ16E030002, LY17E030011), and the Natural Science Foundation of Ningbo (2017A610057, 2016A610255). We are indebted to Professor Xiayin Yao and Gaozhan Liu for assistance in the electrochemical impedance spectroscopy (EIS) measurements.

语种：英文

外文关键词：tough hydrogels; adhesion; zwitterionic polymer; self-healing; strain sensors

摘要：It is desired to create skin strain sensors composed of multifunctional conductive hydrogels with excellent toughness and adhesion properties to sustain cyclic loadings during use and facilitate the electrical signal transmission. Herein, we prepared transparent, compliant, and adhesive zwitterionic nanocomposite hydrogels with excellent mechanical properties. The incorporated zwitterionic polymers can form interchain dipole-dipole associations to offer additional physical cross-linking of the network. The hydrogels show a high fracture elongation up to 2000%, a fracture strength up to 0.27 MPa, and a fracture toughness up to 2.45 MJ/m(3). Moreover, the reversible physical interaction imparts the hydrogels with rapid self-healing ability without any stimuli. The hydrogels are adhesive to many surfaces including polyelectrolyte hydrogels, skin, glasses, silicone rubbers, and nitrite rubbers. The presence of abundant zwitterionic groups facilitates ionic conductivity in the hydrogels. The combination of these properties enables the hydrogels to act as strain sensors with high sensitivity (gauge factor = 1.8). The strategy to design the tough, adhesive, self-healable, and conductive hydrogels as skin strain sensors by the zwitterionic nanocomposite hydrogels is promising for practical applications.