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Journal of Materials Science

Erschienen in:

05.05.2022 | Chemical routes to materials

Modification of graphene by polypyrrole and ionic liquids for dual-band electromagnetic interference shielding hydrogels

verfasst von: Meng Xiang, Hongwei Niu, Sai Qin, Runmiao Yang, Wei Lin, Shilong Zhou, Zhou Yang, Shuang Dong

Erschienen in: Journal of Materials Science | Ausgabe 24/2022

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Abstract

The most previous research aimed to electromagnetic interference shielding effectiveness (EMI SE) was focused on X-band, which were normally used in communications for satellites. Nowadays, the growth of terahertz technology for 6G communication transfigures mobile and information acquisition. However, few researches have broadcasted the fabrication of hydrogels with application in dual-band EMI SE in X-band and terahertz band (THz-band). Herein, polyvinyl alcohol (PVA) hydrogels applied to dual-band electromagnetic interference (EMI) shielding were prepared by a facile approach. Firstly, reduced graphene oxide (rGO) were modified by polypyrrole (PPy) and ionic liquids (IL) on its nano-sheets to increase the conductivity. Then, the modified rGO (I-P-rGO) was incorporated into PVA solution to in situ form the heterogeneous conducting network in the deformable PVA hydrogels. The obtained PVA/I-P-rGO composite hydrogels exhibited high EMI SE of 32.9 dB in X-band and 22.4 dB in THz-band with 10.0 wt% fillers content due to the heterogeneous conducting network architecture, which opens an avenue for hydrogels applied in shielding electromagnetic waves in X-band and THz-band band at the same time.

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Vorheriger Artikel Adsorption behavior of the surface conditioning agent particles on the surface of high-strength steel

Nächster Artikel Synthesis and characterization of 2,5-furandicarboxylic acid poly(butanediol sebacate-butanediol) terephthalate (PBSeT) segment copolyesters with excellent water vapor barrier and good mechanical properties

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Titel: Modification of graphene by polypyrrole and ionic liquids for dual-band electromagnetic interference shielding hydrogels
verfasst von: Meng Xiang
Hongwei Niu
Sai Qin
Runmiao Yang
Wei Lin
Shilong Zhou
Zhou Yang
Shuang Dong
Publikationsdatum: 05.05.2022
Verlag: Springer US
Erschienen in: Journal of Materials Science / Ausgabe 24/2022
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-022-07247-z

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Abstract

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