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Functionalised SiO2 modified icephobic nanocomposite electrospun membranes for outdoor electromagnetic shielding applications

Tas, Mahmut; Musa, Umar Gishiwa; Ahmed, Ifty; Xu, Fang; Smartt, Christopher; Hou, Xianghui

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Authors

Mahmut Tas

Umar Gishiwa Musa

FANG XU FANG.XU@NOTTINGHAM.AC.UK
Assistant Professor

Christopher Smartt

Xianghui Hou



Abstract

Outdoor electronic equipment such as signal stations, radar units, and cellular base stations would benefit from electromagnetic interference (EMI) shielding systems, but ice accretion on the surface of these facilities often causes critical challenges, especially in cold regions and winter season. In this study, icephobic nanocomposite electrospun membranes were developed via a two-step process from recycled polyethylene terephthalate (r-PET), which exhibited high electromagnetic shielding efficiency with superhydrophobic and icephobic performance. The surface superhydrophobicity and icephobicity of the membrane were achieved after surface modification using fluorinated silane functionalised SiO2 nanoparticles (FSFS). Superhydrophobicity with less than 5° of contact angle hysteresis was observed on the nanocomposite electrospun membranes, and the ice adhesion strength was approximately 50 kPa after the FSFS modification, which was ∼6 times lower than aluminium reference. Furthermore, with the addition of 20 wt% magnetite nanopowders, the r-PET nanocomposite electrospun membranes demonstrated a high magnetic response, around 4.22 emu/g, in the range of −10 and + 10 kOe, and a high electromagnetic shielding efficiency between 11 and 22 dB in the frequency range of 400 MHz to 6 GHz. The icephobic r-PET electrospun membranes incorporated with magnetite are promising candidate materials for outdoor EMI shielding applications.

Journal Article Type Article
Acceptance Date Dec 27, 2021
Online Publication Date Jan 3, 2022
Publication Date Feb 1, 2022
Deposit Date Jan 7, 2022
Publicly Available Date Jan 4, 2023
Journal Polymer
Print ISSN 0032-3861
Publisher Elsevier BV
Peer Reviewed Peer Reviewed
Volume 240
Article Number 124499
DOI https://doi.org/10.1016/j.polymer.2021.124499
Keywords Polymers and Plastics; Materials Chemistry; Organic Chemistry
Public URL https://nottingham-repository.worktribe.com/output/7168114
Publisher URL https://www.sciencedirect.com/science/article/pii/S0032386121011228

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