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Well-aligned MXene/chitosan films with humidity response for high-performance electromagnetic interference shielding
Fang Liu1, Yuchao Li1, Shuai Hao2
1School of Materials Science and Engineering, Liaocheng University, Liaocheng, 252000, China.
Carbohydrate Polymers
|June 14, 2020
Summary
Chitosan/MXene films offer effective electromagnetic interference (EMI) shielding. These biodegradable films utilize MXene
Area of Science:
- Materials Science
- Nanotechnology
- Polymer Science
Background:
- MXene/polymer composites are explored for electromagnetic interference (EMI) shielding due to MXene's conductivity.
- Chitosan (CS) is a biodegradable, non-toxic, and renewable biomass polymer.
Purpose of the Study:
- To prepare chitosan/MXene (CS/MXene) films for EMI shielding applications.
- To investigate the relationship between film properties, electrical conductivity, and EMI shielding performance.
Main Methods:
- CS/MXene films were fabricated using vacuum-assisted filtration.
- The electrical conductivity and EMI shielding effectiveness of the films were evaluated.
Main Results:
- Well-aligned Ti3C2Tx layers in CS/MXene films enhanced electrical conductivity and EMI shielding.
- A 37-micron-thick film with 75% Ti3C2Tx achieved ~34.7 dB EMI shielding effectiveness.
- A 13-micron-thick film with 50% Ti3C2Tx demonstrated a specific shielding effectiveness of ~15153.9 dB cm-1, outperforming existing biomass-based composites.
Conclusions:
- CS/MXene films exhibit excellent electrical conductivity and EMI shielding properties.
- The films show potential as next-generation EMI shielding materials due to their performance and biomass-derived nature.
