Complex Permittivity and Electromagnetic Interference Shielding Effectiveness of OPEFB Fiber-Polylactic Acid Filled with Reduced Graphene Oxide

Ibrahim Lakin, Ismail; Abbas, Zulkifly; Azis, Rabaah Syahidah; Abubakar Alhaji, Ibrahim

doi:10.3390/ma13204602

Open AccessArticle

Complex Permittivity and Electromagnetic Interference Shielding Effectiveness of OPEFB Fiber-Polylactic Acid Filled with Reduced Graphene Oxide

¹

Department of Physics, Faculty of Science, University Putra Malaysia (UPM), Serdang 43400, Malaysia

²

Material Synthesis and Characterization Laboratory, Institute of Advanced Technology (ITMA), University Putra Malaysia (UPM), Serdang 43400, Malaysia

^*

Author to whom correspondence should be addressed.

Materials 2020, 13(20), 4602; https://doi.org/10.3390/ma13204602

Submission received: 22 June 2020 / Revised: 31 July 2020 / Accepted: 5 August 2020 / Published: 16 October 2020

(This article belongs to the Section Carbon Materials)

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Abstract

This study was aimed at fabricating composites of polylactic acid (PLA) matrix-reinforced oil palm empty fruit bunch (OPEFB) fiber filled with chemically reduced graphene oxide (rGO). A total of 2–8 wt.% rGO/OPEFB/PLA composites were characterized for their complex permittivity using an open-ended coaxial probe (OEC) technique. The shielding efficiency properties were calculated using the measured transmission (S₂₁) and the reflection (S₁₁) coefficient results. All the measurements and calculations were performed in the 8–12 GHz frequency range. The morphological and microstructural study included X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and Fourier transform infrared spectroscopy (FTIR). The results indicated that the incorporation of rGO as filler into the composites enhanced their complex permittivity properties. The composites showed a total shielding efficiency (SE_T) of about 31.2 dB at a frequency range of 8–12 GHz, which suggests their usefulness for microwave absorption.

Keywords: fiber; polymer; dielectric properties; reduced graphene oxide; EMI shielding effectiveness

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MDPI and ACS Style

Ibrahim Lakin, I.; Abbas, Z.; Azis, R.S.; Abubakar Alhaji, I. Complex Permittivity and Electromagnetic Interference Shielding Effectiveness of OPEFB Fiber-Polylactic Acid Filled with Reduced Graphene Oxide. Materials 2020, 13, 4602. https://doi.org/10.3390/ma13204602

AMA Style

Ibrahim Lakin I, Abbas Z, Azis RS, Abubakar Alhaji I. Complex Permittivity and Electromagnetic Interference Shielding Effectiveness of OPEFB Fiber-Polylactic Acid Filled with Reduced Graphene Oxide. Materials. 2020; 13(20):4602. https://doi.org/10.3390/ma13204602

Chicago/Turabian Style

Ibrahim Lakin, Ismail, Zulkifly Abbas, Rabaah Syahidah Azis, and Ibrahim Abubakar Alhaji. 2020. "Complex Permittivity and Electromagnetic Interference Shielding Effectiveness of OPEFB Fiber-Polylactic Acid Filled with Reduced Graphene Oxide" Materials 13, no. 20: 4602. https://doi.org/10.3390/ma13204602

APA Style

Ibrahim Lakin, I., Abbas, Z., Azis, R. S., & Abubakar Alhaji, I. (2020). Complex Permittivity and Electromagnetic Interference Shielding Effectiveness of OPEFB Fiber-Polylactic Acid Filled with Reduced Graphene Oxide. Materials, 13(20), 4602. https://doi.org/10.3390/ma13204602

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Complex Permittivity and Electromagnetic Interference Shielding Effectiveness of OPEFB Fiber-Polylactic Acid Filled with Reduced Graphene Oxide

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