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High field ion mobility in dielectric polymers: A molecular dynamics study of water in poly(dimethylsiloxane)
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology. ABB Corporate Research, Västerås, Sweden.ORCID iD: 0000-0002-3149-4045
2017 (English)In: Proceedings of the International Symposium on Electrical Insulating Materials, Institute of Electrical Engineers of Japan , 2017, Vol. 2, p. 467-469Conference paper, Published paper (Refereed)
Abstract [en]

Detailed understanding of charge transport phenomena in dielectrics is important in order to understand the influence of chemical composition on the dielectric properties. Material simulation methods such as density functional theory (DFT) and molecular dynamics (MD) can be used to calculate basic properties of the material. Here we focus on mobility of ions at high fields by applying MD simulations. In a recent study of ionic mobility in polyethylene, it was shown that ion mobility starts to deviate from the Einstein relation at high fields, resulting in a linear increase of the mobility [1]. We argue that this is due to conformational change of the surrounding polymers through elastic scattering which facilitates and thus accelerates the charged molecule. Here we investigate this effect of water in poly(dimethylsiloxane) (PDMS).

Place, publisher, year, edition, pages
Institute of Electrical Engineers of Japan , 2017. Vol. 2, p. 467-469
Keywords [en]
High electric field, Ion mobility, Molecular dynamics, Polymer insulation
National Category
Other Chemistry Topics
Identifiers
URN: urn:nbn:se:kth:diva-224281DOI: 10.23919/ISEIM.2017.8166531ISI: 000428288000106Scopus ID: 2-s2.0-85041917160ISBN: 9784886860996 OAI: oai:DiVA.org:kth-224281DiVA, id: diva2:1190788
Conference
2017 International Symposium on Electrical Insulating Materials, ISEIM 2017, Toyohashi Chamber of Commerce and Industry, Toyohashi, Japan, 11 September 2017 through 15 September 2017
Funder
Swedish Foundation for Strategic Research
Note

QC 20180315

Available from: 2018-03-15 Created: 2018-03-15 Last updated: 2018-05-22Bibliographically approved

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Unge, Mikael

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  • apa
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Output format
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