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Ionic conductivity and interfacial interaction in penton/AgI composites

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Abstract

New nanostructured composite system (1 − x)penton/xAgI (where 0 < x < 1) was synthesized by a solution-based technique, which involves the process of modification of polymer surface. Samples of the composite system were characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and electrical impedance spectroscopy. It was shown that AgI nanoparticles form a continuous layer at the surface of penton particles and consist mainly of cubic γ-phase with a small amount of hexagonal β-phase. Maximum conductivity enhancement at almost one order of magnitude higher compared to the pristine AgI has been observed for the sample with x = 0.5. The overall activation energy for conduction varies from 0.23 to 0.38 eV, depending on the content of γ-phase of silver iodide in the samples. Two percolation thresholds has been also recorded at the points x = 0.1 and x = 0.3.

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Acknowledgments

The author would like to thank V. Mischenko for his help with development of technique for hydrophilization of penton surface, S. Makhno for the assistance at electrical measurements, and Prof. P. Gorbyk for the useful discussion of the results.

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  1. Chuiko Institute of Surface Chemistry, Naumova 17, 03164, Kiev, Ukraine

    Ivan Mudrak

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  1. Ivan Mudrak
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Correspondence to Ivan Mudrak.

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Mudrak, I. Ionic conductivity and interfacial interaction in penton/AgI composites. Ionics 20, 83–88 (2014). https://doi.org/10.1007/s11581-013-1010-2

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  • DOI: https://doi.org/10.1007/s11581-013-1010-2

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