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Electrical conductivity and electromagnetic interference shielding properties of polymer/carbon composites

Authors :
Li Wang
Shah Fahad
Tarig Elshaarani
Muhammad Usman
Kaleem-ur-Rahman Naveed
Ahsan Nazir
Amin Khan
Bilal Ul Amin
Tengfei Lin
Haojie Yu
Fazal Haq
Source :
Journal of Materials Science: Materials in Electronics. 30:16636-16650
Publication Year :
2019
Publisher :
Springer Science and Business Media LLC, 2019.

Abstract

Ferrocene-based polythiophene (PT) composites containing different carbon fillers like multi-walled carbon nanotubes (MWCNTs), reduced graphene oxide (RGO) and carbon black (CB) were prepared through in situ chemical oxidative polymerization method. The prepared PT composites were characterized by employing SEM, TEM, FTIR, XRD and XPS techniques. The thermal stability of the PT composites was investigated by TG analysis. It was found that the thermal stability of PT composites was highly improved as compared with pure PT. The electrical conductivity of the composites was measured by a typical four-probe method. Electrical conductivity measurements indicated that the PT composites showed excellent electrical conductivity. Electromagnetic interference shielding effectiveness (EMI SE) of the composites was measured by using coaxial method in the frequency range of 1–4.5 GHz. The total shielding effectiveness (SET) achieved for PT composites along with MWCNT, RGO and CB was − 24 dB, − 11.27 dB, and − 10.46 dB at 50 wt% composite sample loading in the paraffin wax matrix, respectively. Therefore, the PT-MWCNT composite can be used for the EMI shielding applications.

Details

ISSN :
1573482X and 09574522
Volume :
30
Database :
OpenAIRE
Journal :
Journal of Materials Science: Materials in Electronics
Accession number :
edsair.doi...........087fe7b632f8eb5671b0b0ddeb0e9e31
Full Text :
https://doi.org/10.1007/s10854-019-02043-z