فهرست نشریات علمی دسترسی آزاد ایران

This study focuses on the production of PMMA-PEO/SiO2 nanocomposites by adding varying amounts of silicon oxide (0, 1.4, 2.8, 4.2, and 5.6%). This research addresses the incorporation of SiO2 nanoparticles into PMMA-PEO polymer blends. The electrical and structural properties of the PMMA-PEO matrix were studied by adding nanoparticles at varying ratios. FTIR investigations revealed the functional groups and chemical bonds of the nanocomposites. The structural, electrical, and FTIR properties of the nanocomposites were proposed. FESEM examinations demonstrated the surface structure of the nanocomposites and the homogeneous formation of silicon oxide nanomaterials with PMMA-PEO polymers. Applying an electric field increased the frequency, decreased the dielectric constant, and reduced electrical losses. The data revealed the amount of electrical loss in each sample and the extent to which the dielectric constant increased with increasing silicon oxide content.  This phenomenon was observed in relation to the electrical conductivity of alternating current. In addition, PMMA-PEO/SiO2 nanocomposites were prepared, and these composites demonstrated their ability to inhibit bacterial growth. This inhibition ability increased with increasing the number of SiO2 nanoparticles. The results demonstrated that the laboratory-prepared nanocomposites possess unique properties, combining the electrical properties of silicon oxide with those of PMMA and PEO polymers. Samples were placed in a Mueller-Hinton medium at 34–37 °C for 24 hours for both gram-negative and gram-positive bacteria. Laboratory tests also demonstrated that these nanocomposites effectively inhibited the growth of various types of bacteria, including Staphylococcus aureus and Klebsiella pneumoniae, including antibiotic-resistant bacteria.