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Erschienen in: Wood Science and Technology 2/2022

14.03.2022 | Original

Preparation and performance of electroless silver composite films based on micro-/nano-cellulose

verfasst von: Dingwen Yin, Yanfei Pan, Yu Wang, Qiang Guo, Shuaiqi Hu, Jintian Huang

Erschienen in: Wood Science and Technology | Ausgabe 2/2022

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Abstract

High absorption and low reflection electromagnetic interference (EMI) shielding films were urgently required to solve increasingly serious radiation pollution. Micro-/Nano-cellulose (MNC) electroless silver film was prepared to obtain ideal electromagnetic shielding performance. The change of electromagnetic shielding efficiency and the performance of the optimal conditions in the process of electroless Ag were analyzed from the standpoint of different electroless Ag concentration to obtain films with excellent electromagnetic shielding. The results showed that Ag particles formed a dense and uniform coating with gradually increasing AgNO3 concentration from 0.05 to 0.125 mol/L. The surface conductivity of the film increased from 1 to 20 S/cm and the surface roughness was 4 μm. The diameter of Ag microcrystalline particles was 18 nm. The contact angle of films was 99°. Here, the electromagnetic shielding efficiency was up to 41 dB in the frequency range from 0.03 to 3000 MHz, indicating that the electromagnetic wave absorption rate of composite films has reached 99.9%, which demonstrated that the EMI shielding mechanism was attributed to the high absorption.

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Metadaten
Titel
Preparation and performance of electroless silver composite films based on micro-/nano-cellulose
verfasst von
Dingwen Yin
Yanfei Pan
Yu Wang
Qiang Guo
Shuaiqi Hu
Jintian Huang
Publikationsdatum
14.03.2022
Verlag
Springer Berlin Heidelberg
Erschienen in
Wood Science and Technology / Ausgabe 2/2022
Print ISSN: 0043-7719
Elektronische ISSN: 1432-5225
DOI
https://doi.org/10.1007/s00226-022-01367-0

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