Journal
CARBOHYDRATE POLYMERS
Volume 254, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2020.117325
Keywords
Ti3C2Tx MXene; Yarn-ball-shaped microspheres; High conductivity; Stability; Electromagnetic interference shielding
Categories
Funding
- Science and Technology Commission of Shanghai Municipality [20230742300, 18595800700]
- Instrumental Analysis AMP
- Research Center of Shanghai University
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Ti3C2Tx MXenes with excellent metallic conductivity are promising for electromagnetic interference shielding. A hierarchical hybrid film with ultrathin thickness embedded with yarn-ball-shaped microspheres of cellulose nanofibrils and multiwalled carbon nanotube was designed for improved absorption of electromagnetic waves. The intercalation of conductive microspheres showed enhanced EMWs absorption and excellent mechanical stability after thermal annealing treatment, making it a good candidate for higher absorption in EMI shielding effectiveness.
Ti3C2Tx MXenes with excellent metallic conductivity have proved promising in its application of electromagnetic interference (EMI) shielding. A hierarchical hybrid film with ultrathin thickness composed of Ti3C2Tx MXene layers embedded with yarn-ball-shaped microspheres of cellulose nanofibrils (CNF) and multiwalled carbon nanotube (MWCNT) was designed to improve the absorption of electromagnetic waves (EMWs). The addition of yarn-ball-shaped microspheres is to shield more EMWs via multiple reflections in the inner space and reduce the undesirable emissions into the air. After thermal annealing treatment, the ultrathin film with intercalation of the carbonized yarn-ball-shaped CNF/MWCNT microspheres exhibited enhanced EMWs absorption as an important part of shielding effectiveness (45.1 +/- 0.9 dB) as well as excellent mechanical stability (approximate to 0.9 million bending times). Thus, the well-designed structure of multilayered hybrid films with intercalated conductive microspheres can be a good candidate for higher absorption in EMI shielding effectiveness and outstanding mechanical properties.
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