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Research Article

In-situ growth of polypyrrole on aramid nanofibers for electromagnetic interference shielding films with high stability

Jianyu Zhou1, Sineenat Thaiboonrod2, Jianhui Fang1, Shaomei Cao1, Miao Miao1, Xin Feng1 ( )
Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Thailand Science Park, Pathum Thani 12120, Thailand
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Abstract

Flexible electromagnetic interference (EMI) shielding films with high stability have shown promising prospect in harsh working conditions such as military, communication, and special protection fields. Herein, flexible aramid nanofibers@polypyrrole (ANF@PPy) films with high stability were easily achieved by the in-situ growth of PPy on the surface of ANF and the subsequent pressured-filtration film-forming process. When the amount of pyrrole (Py) monomer is 40 µL, the ANF@PPy (AP40) film exhibited excellent EMI shielding performance with shielding effectiveness (SE) of 41.69 dB, tensile strength of 96.01 MPa, and fracture strain of 21.95% at the thickness of 75.76 μm. Particularly, the anticipated EMI shielding performance can be maintained even after being heated at 200 °C in air, soaked in 3.5% NaCl solution, repeated folding for one million times, or burned directly, indicating superior environmental durability in harsh conditions. Therefore, it is believed that the ANF@PPy films with high stability offer a facile solution for practical protection for high-performance EMI shielding applications.

Graphical Abstract

Aramid nanofibers@polypyrrole (ANF@PPy) films with excellent electromagnetic interference (EMI) shielding performance were easily achieved by the in-situ growth of PPy on ANF surface. Particularly, the anticipated EMI shielding performance can be maintained after being heated at 200 °C in air, soaked in 3.5% NaCl solution, repeated folding for one million times, or burned directly, indicating that the ANF@PPy films exhibited superior environmental durability for potential in harsh conditions.

Keywords

in-situ growth of polypyrrole (PPy) on aramid nanofibers (ANF) electromagnetic interference (EMI) shielding filmshigh stabilitywater-resistancethermal mechanical properties

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Nano Research
Volume 15 Issue 9,
September 2022
Pages 8536-8545
DOI: 10.1007/s12274-022-4628-4

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Cite this article:
Zhou J, Thaiboonrod S, Fang J, et al. In-situ growth of polypyrrole on aramid nanofibers for electromagnetic interference shielding films with high stability. Nano Research, 2022, 15(9): 8536-8545. https://doi.org/10.1007/s12274-022-4628-4
Topics:
Nanofibers
Part of a topical collection:
EM Wave Functional Materials

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Received: 14 May 2022
Revised: 30 May 2022
Accepted: 01 June 2022
Published: 01 July 2022
© Tsinghua University Press 2022