• Md Nasir Ali
• Mir Safiulla

The polysiloxane – TiO2 nanocomposites were prepared by a solvent casting method in triethanolamine and tetrahydrofuran solvents. Fourier transform infrared spectroscopy for structural analysis and surface morphology was carried by scanning electron microscopy. The amorphous nature of polysiloxane observed in the amorphous nature of polysiloxane observed in XRD spectra. The surface morphology was studied by employing scanning electron microscopy and it is found that the nanoparticles are completely embedded in the polysiloxane. Further, the dielectric spectroscopy study reveals that the 0.3 wt % shows low dielectric constant and dielectric loss, as a result, it shows high conductivity of 1.35 х 10-4 S/cm. Among all the nanocomposites, 0.3 wt % of shows the lowest tangent loss value of 0.1 due to the non-debye’s type of relaxation process where the charge carriers are relaxed at the higher energy state for a longer time. The quality factor confirms that there is a small damping loss for 0.3 wt % of nanocomposites which is favorable for the high conductivity. Therefore, these nanocomposites can be potential candidates for many high dielectrics engineering applications.

Polysiloxane, Titanium dioxide, Nanocomposites, Dielectric

"Investigation of frequency dependent dielectric properties of polysiloxane – TiO2 nanocomposites", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.156-161, May 2019, Available :http://www.jetir.org/papers/JETIRCY06025.pdf

"Investigation of frequency dependent dielectric properties of polysiloxane – TiO2 nanocomposites", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp156-161, May 2019, Available at : http://www.jetir.org/papers/JETIRCY06025.pdf