Collection of scientific works Nanosystems, nanomaterials, nanotechnologies Year 2023 Volume 21, Issue 1
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Mohanad H. Meteab, Ahmed Hashim, and Bahaa H. Rabee
Preparation, Morphological and Antibacterial Activity of PS–PC/MnO2–SiC Nanocomposites for Biomedical Applications
0199–0208 (2023)

PACS numbers: 68.37.Vj, 81.07.Pr, 81.16.-c, 87.19.xb, 87.64.Ee, 87.64.M-, 87.85.Rs

In this work, nanostructures of polystyrene (PS), polycarbonate (PC), manganese-dioxide nanoparticles (MnO2 NPs), and silicon carbide nanoparticles (SiC NPs) are fabricated to use as coating materials for antibacterial applications. The casting method is used to make nanocomposites’ films made of PS–PC/MnO2–SiC. The field emission scanning electron microscopy (FE-SEM), optical microscopy (OM), and antibacterial activity are tested. Analysis with FE-SEM and OM shows that the MnO2/SiC NPs are spread out evenly in the polymeric matrix. The diameters of the inhibition zones for gram-negative bacteria (Salmonella) are bigger than the diameters of the inhibition zones for gram-positive bacteria (S.aureus). This means that the prepared nanocomposites work better with gram-negative bacteria than with gram-positive bacteria and, therefore, have potential applications in biotechnology and biomedical science.

Key words: silicon carbide, manganese dioxide, polystyrene, polycarbonate, field emission scanning electron microscopy, optical microscopy, antibacterial applications, reactive oxygen species.

https://doi.org/10.15407/nnn.21.01.199

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