• Md Nasir Ali
• Dr. Mir Safiulla

The polysiloxane – ZnO nanocomposites were prepared by solvent casting method in triethanolamine and tetrahydrofuran solvents. The prepared nanocomposites were characterized by X-ray's diffraction for structural study and surface morphology was carried by scanning electron microscopy. The XRD spectra indicate that the pure polysiloxane is amorphous in nature and ZnO nanoparticles structure remains same even after dispersion in polysiloxane. Further, the DC conductivity shows that the conductivity increases with increase in temperature due to tunnelling phenomena. Among all nanocomposites, 0.3 wt % shows the high DC conductivity of 3 х 10-2 S/cm. The dielectric study was carried out by two probe method. It is observed that 0.3 wt % of shows the low imaginary permittivity value of 576 F/m due to the dipole polarization effect. The nanocomposites of 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.

Polysiloxane, Titanium dioxide, Nanocomposites, Dielectric

"Investigation of frequency dependent dielectric property and thermal study of polysiloxane – ZnO nanocomposites", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.998-1002, June-2019, Available :http://www.jetir.org/papers/JETIR1906148.pdf

"Investigation of frequency dependent dielectric property and thermal study of polysiloxane – ZnO nanocomposites", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp998-1002, June-2019, Available at : http://www.jetir.org/papers/JETIR1906148.pdf