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Enhancement of dielectric properties with the addition of bromine and dopamine modified barium titanate particles to silicone rubber

Published online by Cambridge University Press:  07 November 2016

Liang Jiang ,
David Kennedy ,
Stephen Jerrams  and
Anthony Betts
Liang Jiang*
Affiliation:
Centre for Elastomer Research, Focas Research Institute, Dublin Institute of Technology, Dublin 8, Ireland
David Kennedy
Affiliation:
Department of Mechanical Engineering, Dublin Institute of Technology, Dublin 1, Ireland
Stephen Jerrams
Affiliation:
Centre for Elastomer Research, Focas Research Institute, Dublin Institute of Technology, Dublin 8, Ireland
Anthony Betts
Affiliation:
Applied Electrochemistry Group, Focas Research Institute, Dublin Institute of Technology, Dublin 8, Ireland
*
Address all correspondence to Liang Jiang at liang.jiang@mydit.ie
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Abstract

Dual-coated barium titanate (BT) particles were prepared using dopamine (DP) in conjunction with bromine (Br) in order to enhance the dielectric constant of silicone rubber (SR) composites containing evenly distributed BT particles. The results showed that both DP and Br were deposited on the BT particles. The dielectric constant of the SR/BT composite was significantly increased from 3.6 to 4.7 at 1 kHz with the addition of BT modified with dopamine (DP–BT). Moreover, the dielectric constant further rose to 4.9 at 1 kHz when the DP–BT particle was grafted with bromine (Br–DP–BT).

Type
Research Letters
Information
MRS Communications , Volume 6 , Issue 4 , December 2016 , pp. 437 - 441
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Copyright
Copyright © Materials Research Society 2016 

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