Enhanced Optical and Electrical Properties of P25 Titanium Dioxide Incorporated Polycaprolactone Nanocomposites

The fabrication of polymer nanocomposites based on polycaprolactone (PCL) and Titanium dioxide (TiO₂) nanoparticles was successfully carried out via solution casting technique. The structural properties of prepared nanocomposites such as lattice parameters, crystallite size etc have been studied by X-ray diffraction (XRD), the interactions between PCL and TiO₂ was confirmed by Fourier transform infrared (FT-IR) spectroscopy and surface morphology was evaluated by field emission scanning electron microscope (FE-SEM) analysis. In this study, the inorganic nanofiller TiO₂ was successfully incorporated in PCL matrix with different weight percentage such as 1, 3 and 5 wt%. The electrical properties of the corresponding nanocomposites (PCL + 1% TiO₂, PCL + 3% TiO₂ and PCL + 5% TiO₂) were investigated and showed good results when compared to pure PCL. The dielectric constant, dielectric loss, electric modulus and electrical conductivity were measured in the frequency range of 10⁻² to 10⁷ Hz.