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Issue 31, 2017
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Controllable dielectric performance of polymer composites via the Coulomb-blockade effect with core–shell structured nano-particles

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Abstract

Designed core–shell structured titanium dioxide–poly(dopamine)-silver (TiO2–PDA-Ag) particles were prepared via 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 the nitrile-butadiene rubber (NBR) matrix but also as chemisorption sites for silver ions. Then the TiO2–PDA-Ag particles were introduced into the NBR matrix to prepare dielectric composites. The effect of the nano-Ag content on morphology, dielectric properties, and electrical properties of the composites was thoroughly investigated. It was found that the Coulomb-blockade effect of nano-Ag particles led to the composites with relatively low dielectric loss and relatively high electrical breakdown strength. This simple and effective approach provides a promising route to adjust the dielectric properties of dielectric composites via the Coulomb-blockade effect.

Graphical abstract: Controllable dielectric performance of polymer composites via the Coulomb-blockade effect with core–shell structured nano-particles

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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, 2017,5, 7759-7767
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    Controllable dielectric performance of polymer composites via the 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, 5, 7759
    DOI: 10.1039/C7TC00978J

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