University of Oulu

Joseph, N., Varghese, J., Sebastian, M. (2017) In situ polymerized polyaniline nanofiber-based functional cotton and nylon fabrics as millimeter-wave absorbers. Polymer Journal, 49 (4), 391-399. doi:10.1038/pj.2016.121

In situ polymerized polyaniline nanofiber-based functional cotton and nylon fabrics as millimeter-wave absorbers

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Author: Joseph, Nina1,2; Varghese, Jobin1,2; Sebastian, Mailadil Thomas1,2
Organizations: 1Materials Science & Technology Division, CSIR NIIST, Thiruvananthapuram 695019, India
2Microelectronics Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, Finland 90014
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 1.1 MB)
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Language: English
Published: Springer Nature, 2017
Publish Date: 2019-04-03


Polyaniline nanofibers and their composite with graphite have been synthesized by a simple chemical polymerization method. Polyaniline nanofiber graphite composites with a thickness of 1 mm exhibit excellent electromagnetic interference (EMI) shielding of above 80 dB in the frequency range of 8.2–18 GHz. EMI shielding fabrics of 0.1 mm thickness based on polyaniline nanofibers and their composite have been developed by an in situ polymerization route. These fabrics combine the properties of polyaniline nanofibers as well as their composite and fabrics (cotton and nylon). The developed functional fabrics with 0.1 mm thickness exhibit EMI shielding effectiveness in the range of 11–15 dB in the 8.2–18 GHz frequency range. Optical and scanning electron microscopy studies indicate the uniform coating of the polyaniline nanofibers over the individual fibers and interweave regions. Thin and flexible shielding materials suitable for a broad range of millimeter-wave shielding applications have been developed using this simple and potentially profitable method.

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Series: Polymer journal
ISSN: 0032-3896
ISSN-E: 1349-0540
ISSN-L: 0032-3896
Volume: 49
Pages: 391 - 399
DOI: 10.1038/pj.2016.121
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Copyright information: © 2017, Springer Nature. This is a post-peer-review, pre-copyedit version of an article published in Polymer Journal. The final authenticated version is available online at: