Journal
ACS APPLIED NANO MATERIALS
Volume 5, Issue 12, Pages 18664-18669Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.2c04437
Keywords
L-citrulline; composite hydrogel; mechanical property; EMI shielding
Funding
- National Natural Science Foundation of China
- Fundamental Research Funds for the Central Universities of China
- [21975108]
- [JUSRP121033]
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A robust and mechanically composite hydrogel with efficient electromagnetic interference shielding performance was fabricated by incorporating L-citrulline-modified Ti3C2Tx MXene nanosheets into poly-acrylamide/sodium alginate hydrogels using ferrous chloride. The composite hydrogels showed optimal tensile strength and EMI shielding effectiveness, making them suitable for applications in the electronic skin field.
In this work, a robust and mechanically composite hydrogel with an efficient electromagnetic interference shielding performance was successfully fabricated via the incorporation of L- citrulline-modified Ti3C2Tx MXene nanosheets into the poly-acrylamide/sodium alginate hydrogels by using ferrous chloride as the adhesive. A L-citrulline-modified Ti3C2Tx MXene nanosheet was the main shielding medium; ferrous chloride could not only enhance the mechanical property of the resultant hydrogels but also slightly improve the EMI shielding efficiency. The optimal tensile strength (3.42 MPa) and the EMI shielding effectiveness (26.8 dB) were achieved for the composite hydrogels with 6.5 wt % L-citrulline-modified Ti3C2Tx MXene nanosheets and 0.6 mol/L ferrous chloride, and the high ductility (780% elongation at break) of the composite hydrogel was reached with 0.5 wt % L-citrulline-modified Ti3C2Tx MXene and 0.8 mol/L ferrous chlorides. With outstanding mechanical and EMI shielding performances, the prepared composite hydrogels could apply in the electronic skin field.
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