Optics and Photonics Society of Iran

The present paper reports the fabrication of LDPE/TiO₂ nanocomposites by incorporating TiO₂ in low density polyethylene (LDPE) followed by the melting method. The effect of addition of TiO₂ nanoparticles on the electrical and optical properties of samples was studied. UV-visible spectroscopy and I-V characteristic were performed to study the optical and electrical parameters such as electrical conductivity, energy band gap and extinction coefficient of nanocomposites. The significant enhancement in the electrical properties of LDPE/TiO₂ compared with pure LDPE was observed with a 30 wt% TiO₂ loading, such as 150% increase in electrical conductivity. The energy band gap and extinction coefficient significantly reduced with increasing TiO₂ content up to 30 wt%, such as energy band gap decreases to 2.4 eV.