Volume 13 No 1 (2015)
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“Dielectric relaxation studies of biodegradable polymeric films based on composition of Gelatin and PVA”
HK Mahavar
The dielectric properties of PVA are considered to be a good tool for studying the polarization as well as molecular relaxation mechanisms dealing with the dynamics of mobile groups. Hence it is very important to examine the dielectric properties of PVA as a result of the variation of its molecular motion, which is affected directly by gelatin concentrations. PVA-gelatin polymer electrolyte films with different percentage of gelatin have been prepared by casting method. At microwave frequency (9.03 GHz) and at temperature 308K, the dielectric permittivity, dielectric loss, loss tangent, dielectric conductivity, relaxation time, extinction coefficient and refractive index of films were studied as a result, all of them increases with the increase in gelatin percentage.
PVA, gelatin, dielectric permittivity, dielectric conductivity, loss tangent, refractive index
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