فهرست نشریات علمی دسترسی آزاد ایران

Four different nanocomposite solutions were prepared by solution casting binary polymer blends composed of polyethylene oxide (PEO) and polyaniline (PANI), incorporating metal oxide nanoparticles (WO₃, Cr₂O₃, and NiO) at controlled concentrations. The objective was to evaluate the influence of oxide incorporation on the structural, optical, and antibacterial characteristics of the resulting films. X-ray diffraction (XRD) patterns confirmed the semi-crystalline nature of the blends and revealed slight modifications in crystallinity upon oxide addition, indicating good nanoparticle dispersion within the polymer matrix. Fourier transform infrared (FTIR) spectroscopy demonstrated strong intermolecular interactions and possible hydrogen bonding between the functional groups of the polymers and the metal oxides. UV–Visible spectroscopy showed enhanced optical absorption and reduced band gap values after doping, reflecting improved electronic transitions. Antibacterial activity tests exhibited clear inhibition zones against S. aureus (6–18 mm) and E. coli (6–21 mm), confirming promising potential for optoelectronic and biomedical applications. all materials prepared to give a good promising result.