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2009
Conference Paper
Title
Composites of silver nanoparticles and poly(vinylidene fluoride-trifluoroethylene) copolymer
Title Supplement
Preparation as well as structural and electrical characterization
Abstract
In this work, the influence of homogeneously dispersed silver nanoparticles in the ferroelectric copolymer poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) has been investigated. Metallic nanocomposite films based on silver particles embedded in a P(VDF-TrFE) matrix were prepared as 20 mu m thin films by solvent casting and following in situ formation of silver colloids within the solid matrix by UV irradiation and thermal treatment. Within the 0-3 composites, the metallic-mass fraction was varied between 0.01 and 1 wt.%, which yielded films with different optical properties. In the prepared nanocomposite films the surface plasmon polariton resonance peak is observed with increasing extinction in the visible spectral range. From the infrared spectra and the measured thermal properties it is concluded that no significant degradation of the polymers occurs. Finally, electrical poling was performed in order to investigate the influence of the embedded silver particle on the polarization build up of the P(VDF-TrFE) matrix polymer. From initial experiments it is concluded that conductivity phenomena across the sample thickness are prevented and a dipolar polarization in the P(VDF-TrFE) is achieved.