An asymmetric electrically conducting self-aligned graphene/polymer composite thin film for efficient electromagnetic interference shielding

Here, we study the self-aligned asymmetric electrically conductive composite thin film prepared via casting of graphene oxide (GO)/poly (vinylidene-hexafluoropropylene) (PVDF-HFP) dispersion, followed by low temperature hydriodic acid reduction. The results showed that composite thin film revealed t...

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Bibliographic Details
Published in:AIP advances 2017-01, Vol.7 (1), p.015103-015103-7
Main Authors: Kumar, Pradip, Kumar, Asheesh, Cho, Kie Yong, Das, Tapas Kumar, Sudarsan, V.
Format: Article
Language:English
Subjects:
Alignment
Conducting polymers
Electric noise
Electrical resistivity
Electromagnetic shielding
Film thickness
Graphene
Polymer films
Polymer matrix composites
Self alignment
Sheets
Skewed distributions
Static electricity
Surface properties
Surface resistivity
Thin films
Vinylidene
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Summary:Here, we study the self-aligned asymmetric electrically conductive composite thin film prepared via casting of graphene oxide (GO)/poly (vinylidene-hexafluoropropylene) (PVDF-HFP) dispersion, followed by low temperature hydriodic acid reduction. The results showed that composite thin film revealed the high orientation of graphene sheets along the direction of film surface. However, graphene sheets are asymmetrically distributed along the film thickness direction in the composite film. Both sides of as prepared composite film showed different surface characteristics. The asymmetric surface properties of composite film induced distinction of surface resistivity response; top surface resistivity (21 Ohm) is ∼ 4 times higher than bottom surface resistivity (5 Ohm). This asymmetric highly electrically conducting composite film revealed efficient electromagnetic interference (EMI) shielding effectiveness of ∼ 30 dB. This study could be crucial for achieving aligned asymmetric composite thin film for high-performance EMI shielding radiation.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.4973535