International Research Journal of Natural Sciences (IRJNS)

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Effect of Doping Ratios on Dielectric Properties of Resol Novolac Resin (RNR) With Rhodamine 6g


Dielectric properties and ac conductivity measurements on Resol Novolac Resin (RNR) doped with (0.01, 0.03, 0.05, 0.07, 0.1)% wt of Rhodamine 6G have been studied.The measurements were carried out in the frequency range (100Hz-1MHz) and temperature in the range (30-100) ˚C and. The experimental results showed that ε′, ε̋ and tanδ increased with increasing temperature, and is due to greater freedom of movement of the dipole molecular chains within polymer at high temperature. The value of ε′ decreased with increasing frequency, which indicates that the major contribution to the polarization comes from orientation polarization. Ac. Conductivity σac and impedance (Z) of doping polymer behaviors as function of frequency and temperature have also been investigated.                                                                         

Keywords: Dielectric properties, Resol Novolac Resin, Rhodamine 6G, ac conductivity.

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