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Chemically reduced graphene oxide-reinforced poly(lactic acid)/poly(ethylene glycol) nanocomposites: preparation, characterization, and applications in electromagnetic interference shielding


Citation

Ahmad, Ahmad Fahad and Ab. Aziz, Sidek and Abbas, Zulkifly and Obaiys, Suzan Jabbar and Matori, Khamirul Amin and Mohd Zaid, Mohd Hafiz and Raad, Haider K. and Aliyu, Umar Sa'ad (2019) Chemically reduced graphene oxide-reinforced poly(lactic acid)/poly(ethylene glycol) nanocomposites: preparation, characterization, and applications in electromagnetic interference shielding. Polymers, 11 (4). art. no. 661. pp. 1-20. ISSN 2073-4360

Abstract

In this study, a nanocomposite of reduced graphene oxide (RGO) nanofiller-reinforcement poly(lactic acid) (PLA)/poly(ethylene glycol) (PEG) matrix was prepared via the melt blending method. The flexibility of PLA was improved by blending the polymer with a PEG plasticizer as a second polymer. To enhance the electromagnetic interference shielding properties of the nanocomposite, different RGO wt % were combined with the PLA/PEG blend. Using Fourier-transform infrared (FT-IR) spectroscopy, field emission scanning electron microscopy (FE-SEM) and X-ray diffraction, the structural, microstructure, and morphological properties of the polymer and the RGO/PLA/PEG nanocomposites were examined. These studies showed that the RGO addition did not considerably affect the crystallinity of the resulting nanomaterials. Thermal analysis (TGA) reveals that the addition of RGO highly improved the thermal stability of PLA/PEG nanocomposites. The dielectric properties and electromagnetic interference shielding effectiveness of the synthesized nanocomposites were calculated and showed a higher SE total value than the target value (20 dB). On the other hand, the results showed an increased power loss by increasing the frequency and conversely decreased with an increased percentage of filler.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
DOI Number: https://doi.org/10.3390/polym11040661
Publisher: MDPI
Keywords: PLA/PEG blend; Reinforcement; Polymers; Nanocomposites; Adhesion; Dielectric
Depositing User: Nabilah Mustapa
Date Deposited: 04 May 2020 16:28
Last Modified: 04 May 2020 16:28
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/polym11040661
URI: http://psasir.upm.edu.my/id/eprint/38399
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