Effect of moisture content on the electromagnetic shielding ability of non-conductive textile structures

Electromagnetically shielding textile materials, especially in professional or ordinary clothing, are used to protect an implanted pacemaker in the body. Alternatively, traditional textiles are known for their non-conductivity and transparency to an electromagnetic field. The main goal of this work...

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Bibliographic Details
Published inScientific reports Vol. 11; no. 1; p. 11032
Main Authors Palanisamy, Sundaramoorthy, Tunakova, Veronika, Militky, Jiri, Wiener, Jakub
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 26.05.2021
Nature Publishing Group
Nature Portfolio
Subjects
639/166
639/301
Drying
Electrical conductivity
Electromagnetic fields
Electromagnetism
Fabrics
Humanities and Social Sciences
Moisture content
multidisciplinary
Pacemakers
Science
Science (multidisciplinary)
Sweat
Sweating
Textiles
Water content
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Summary:Electromagnetically shielding textile materials, especially in professional or ordinary clothing, are used to protect an implanted pacemaker in the body. Alternatively, traditional textiles are known for their non-conductivity and transparency to an electromagnetic field. The main goal of this work was to determine whether the high moisture content (sweat) of the traditional textile structure significantly affects the resulting ability of the material to shield the electromagnetic field. Specifically, whether sufficient wetting of the traditional textile material can increase its electrical conductivity to match the electrically conductive textiles determined for shielding of the electromagnetic field. In this study, cotton and polyester knitted fabric samples were used, and two liquid medias were applied to the samples to simulate human sweating. The experiment was designed to analyse the factors that have a significant effect on the shielding effectiveness that was measured according to ASTM D4935. The following factors have a significant effect on the electromagnetic shielding effectiveness of moisturised fabric: squeezing pressure, drying time and type of liquid media. Additionally, the increase of electromagnetic shielding was up to 1 dB at 1.5 GHz frequency at the highest level of artificial sweat moisturised sample.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-90516-9