Abstract

Isophorene diisocyanate and polyethylene glycol are taken in 1.2:1 ratio to prepared pure polyurethane (PU) polymer. The nickel nanoparticles are added into pure polyurethane matrix to synthesize PU/Ni (25%) nanocomposites. The formation of pure polyurethane and nickel-polyurethane nano-composites were confirmed FTIR spectra. The variation of temperature on some electrical properties (i.e. tangent loss, electrical modulus, ac conductivity, Nyquist plots etc.) of the nanocomposites has produced some interesting results useful for device applications. The electrical properties of pure polyurethane have drastically changed due to addition of nickel nanoparticles (as filler) in the polymer. The increasing tendency of ac conductivity and high tangent loss make nickelpolyurethane nano-composites as smart materials and very useful for energy storage, biomaterials and shape memory.