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

被引：11
作者：
Ibrahim Lakin, Ismail [1 ]
Abbas, Zulkifly [1 ]
Azis, Rabaah Syahidah [1 ,2 ]
Abubakar Alhaji, Ibrahim [1 ]
机构：
[1] Univ Putra Malaysia UPM, Dept Phys, Fac Sci, Serdang 43400, Malaysia
[2] Univ Putra Malaysia UPM, Mat Synth & Characterizat Lab, Inst Adv Technol ITMA, Serdang 43400, Malaysia
来源：
MATERIALS | 2020年 / 13卷 / 20期
关键词：
fiber; polymer; dielectric properties; reduced graphene oxide; EMI shielding effectiveness; DIELECTRIC-PROPERTIES; ELECTRICAL-PROPERTIES; POLYMER COMPOSITES; POLY(LACTIC ACID); CARBON NANOTUBES; CONDUCTIVITY;
D O I：
10.3390/ma13204602
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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 (S-21) and the reflection (S-11) 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 (SET) of about 31.2 dB at a frequency range of 8-12 GHz, which suggests their usefulness for microwave absorption.
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页码：1 / 12
页数：12
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