期刊
BIOMACROMOLECULES
卷 22, 期 3, 页码 1273-1281出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.biomac.0c01777
关键词
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资金
- National Natural Science Foundation of China [21665024]
- Basic Project of Science and Research of Colleges and Universities of Gansu Province [5001-109]
- Project for Young Teacher of Northwest Normal University [NWNU-LKQN-13-6]
Researchers have successfully developed a hydrogel material with high conductivity and good mechanical properties by introducing polypyrrole particles and using ferric-ion crosslinking. With a self-healing efficiency of 93%, this material has the potential to be used in a wide range of applications.
In recent years, hydrogels with self-healing capability and conductivity have become ideal materials for the design of electrodes, soft robotics, electronic skin, and flexible wearable devices. However, it is still a critical challenge to achieve the synergistic characteristics of high conductivity, excellent selfhealing efficiency without any stimulations, and decent mechanical properties. Herein, we developed a ferric-ion (Fe3+) crosslinked acrylic acid and chitosan polymer hydrogel using embedded polypyrrole particles with features of high conductivity (2.61S.m-1) and good mechanical performances (a tensile strength of 628%, a stress of 0.33 MPa, an elastic modulus of 0.146 MPa, and a toughness of 1.14 MJ.m(-3)). In addition, the self-healing efficiency achieved 93% in tensile strength after healing in the air for 9 h without any external stimuli. Therefore, with these outstanding mechanical, self-healing, and conductive abilities all in one, it is possible to fabricate a new kind of soft material with wide applications.
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