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Erschienen in: Cellulose 6/2021

20.02.2021 | Original Research

Insights into the microstructures and reinforcement mechanism of nano-fibrillated cellulose/MXene based electromagnetic interference shielding film

verfasst von: Xuran Xu, Shuaining Wu, Jian Cui, Luyu Yang, Dingyao Liu, Yongzheng Zhang, Xiao Chen, Kai Wu, Dongping Sun

Erschienen in: Cellulose | Ausgabe 6/2021

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Abstract

Recently, with the high requirement of electromagnetic interference (EMI) shielding materials, micro- or nano-fibrillated cellulose reinforced Ti3C2Tx nanosheets (transition-metal carbides/carbonitrides, MXene) composites have attracted wide attention due to their complementary functional properties. Nevertheless, it is still challenging to overcome a trade-off between EMI shielding performance and mechanical enhancement with the addition of reinforcing fillers. Herein, modified bacterial cellulose nanofiber (BCNF), with well-tuned micro structure, is employed as the unique reinforcing unit to self-assembly with MXene. The mechanical and electrical properties of different cellulose-derived composites were further compared to get insights into the effect of the fiber configuration on reinforcing properties. Particularly, the optimized MXene/BCNF sample simultaneously exhibited high tensile strength (252.2 MPa), excellent folding endurance (> 10,000 times), and high electrical conductivity (443.5 S cm−1). With striking shielding effectiveness (19,652 dB cm2 g−1), the sample effectively interferes with emitted electromagnetic waves, and is therefore a promising candidate for wearable devices and human electronic equipment.

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Literatur
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Metadaten
Titel
Insights into the microstructures and reinforcement mechanism of nano-fibrillated cellulose/MXene based electromagnetic interference shielding film
verfasst von
Xuran Xu
Shuaining Wu
Jian Cui
Luyu Yang
Dingyao Liu
Yongzheng Zhang
Xiao Chen
Kai Wu
Dongping Sun
Publikationsdatum
20.02.2021
Verlag
Springer Netherlands
Erschienen in
Cellulose / Ausgabe 6/2021
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-021-03765-2

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