Microwave Irradiation Synthesis and Characterization of Reduced-(Graphene Oxide-(Polystyrene-Polymethyl Methacrylate))/Silver Nanoparticle Nanocomposites and their Anti-Microbial Activity

Mohammad A. Aldoasri, Khaled Bin Bandar Alsaud, Ali Othman, Mohammed Al-Hindawi, Nadimul Haque Faisal, Rehan Ahmed, Feven Mattews Michael, Mohan Raj Krishnan, Edreese Alsharaeh

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Abstract

Herein, we report a facile process for the preparation of styrene and methyl-methacrylate copolymer nanocomposites containing reduced graphene oxide and silver nanoparticles ((R-(GO-(PS-PMMA))/AgNPs)) by using (i) microwave irradiation (MWI) to obtain R-(GO-(PS-PMMA))/AgNPs and (ii) the in situ bulk polymerization technique to produce RGO/AgNPs-(PS-PMMA). Various characterization techniques, including FT-IR, XPS, Raman spectroscopy, XRD, SEM, HR-TEM, DSC, and TGA analysis, were used to characterize the prepared nanocomposites. The Berkovich nanoindentation method was employed to determine the hardness and elastic modulus of the nanocomposites. The results showed that the MWI-produced nanocomposites were found to have enhanced morphological, structural, and thermal properties compared with those of the nanocomposites prepared by the in situ method. In addition, the antibacterial activity of the prepared nanocomposites against the E. coli HB 101 K-12 was investigated, whereby an inhibition zone of 3 mm (RGO/AgNPs-(PS-PMMA) and 27 mm (R-(GO-(PS-PMMA))/AgNPs) was achieved. This indicates that the MWI-prepared nanocomposite has stronger antibacterial activity than the in situ-prepared nanocomposite.

Original languageEnglish
Article number1155
JournalPolymers
Volume12
Issue number5
DOIs
Publication statusPublished - 18 May 2020

Keywords

  • Anti-microbial
  • Microwave irradiation
  • PS-PMMA
  • Reduced graphene oxide
  • Silver nanoparticles

ASJC Scopus subject areas

  • Chemistry(all)
  • Polymers and Plastics

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