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Controllable dielectric performance of polymer composites by Coulomb-blockade effect with core-shell structured nano-particles

Abstract

Designed core-shell structured titanium dioxide-poly(dopamine)-silver (TiO2-PDA-Ag) particles were prepared by self-polymerization of poly(dopamine) and electroless plating of nano-silver particles. The poly(dopamine) layer was used not only to improve the interfacial interaction between TiO2 and nitrile-butadiene rubber (NBR) matrix but also as chemisorption sites for silver ions. Then the TiO2-PDA-Ag particles were introduced into NBR matrix to prepare dielectric composites. The effect of nano-Ag content on morphology, dielectric properties, and electrical properties of composites was thoroughly investigated. It was found that the Coulomb-blockade effect of nano-Ag particles leaded to the composites exhibit relatively low dielectric loss and relatively high electrical breakdown strength. This simple and effective approach provides a promising route to adjust dielectric properties of dielectric composites by Coulomb-blockade effect.

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Publication details

The article was received on 07 Mar 2017, accepted on 07 Jul 2017 and first published on 10 Jul 2017


Article type: Paper
DOI: 10.1039/C7TC00978J
Citation: J. Mater. Chem. C, 2017, Accepted Manuscript
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    Controllable dielectric performance of polymer composites by Coulomb-blockade effect with core-shell structured nano-particles

    D. Yang, S. Huang, M. Ruan, Y. Wu, S. Li, H. Wang, J. Zhang, H. Ma, W. Guo and L. Zhang, J. Mater. Chem. C, 2017, Accepted Manuscript , DOI: 10.1039/C7TC00978J

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