Polymer nanocomposites comprising PMMA matrix and ZnO, SnO2, and TiO2 nanofillers: A comparative study of structural, optical, and dielectric properties for multifunctional technological applications

摘要: Abstract Polymer nanocomposite (PNC) films consisted of poly (methyl methacrylate) (PMMA) matrix and wide energy bandgap semiconductor nanocrystallite fillers viz. zinc oxide (ZnO), tin (SnO2), titanium dioxide (TiO2) were prepared by a sonicated suspension nanoparticles in polymeric solutions followed the casting method. The X-ray diffraction (XRD) scanning electron microscopy (SEM) characterization revealed successful formation these hybrids. ultraviolet–visible (UV–Vis) spectroscopic study explained that absorbance PNC largely differed with type metal nanofillers their concentrations (i.e., 1–5 wt%). UV-absorbance was found relatively high for PMMA/TiO2 low PMMA/SnO2 at same concentration fillers. film thickness dependent confirmed increase thicknesses significantly enhanced UV–Vis reduced bandgaps composition composites. dielectric permittivity ZnO SnO2 containing to be appreciably increased fillers, whereas bearing TiO2 exhibited decrease as compared host PMMA temperature 30 °C. Further, gradual materials noted experimental electric field frequency from 20 Hz 1 MHz range. modulus spectra single relaxation process lower region which attribute ester group rotations chain repeat units it influenced nanocomposites. AC electrical conductivities all observed slightly showed linear behaviour variation. range tailorable optical parameters change evidence PNCs could promising multifunctional UV-shielders, sensors, tuners developing various advanced optoelectronic organoelectronic devices, also use nanodielectric insulators substrates architect next-generation flexible-type electronic devices.