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Electrical conductivity of waxes as model systems for polyethylene: Role of water

Electrical conductivity of waxes as model systems for polyethylene: Role of water
Electrical conductivity of waxes as model systems for polyethylene: Role of water
Novel experimental and theoretical studies of the electrical conductivity of high-purity dodecane, paraffin wax and low density polyethylene are reported herein. The role of the charge density, water content and phase changes in determining conductivity as the temperature increases from 25 oC to 65 oC, a temperature range relevant to applications of insulating materials, is determined. Low levels of absorbed water determine the measured conductivity for T< 50 oC and this can be explained by taking account of the charge carriers produced by the auto-ionisation of water. In comparison to commercial polyethylene and lubricating oils, the temperature dependence of the conductivity of dry n-dodecane is anomalously high.
Electrical Conductivity, Waxes, Water
0021-8995
Hosier, Ian
6a44329e-b742-44de-afa7-073f80a78e26
Vaughan, Alun
6d813b66-17f9-4864-9763-25a6d659d8a3
Quirke, Nick
abc4aff2-25c6-4e50-be09-4ef24d638ff9
Hosier, Ian
6a44329e-b742-44de-afa7-073f80a78e26
Vaughan, Alun
6d813b66-17f9-4864-9763-25a6d659d8a3
Quirke, Nick
abc4aff2-25c6-4e50-be09-4ef24d638ff9

Hosier, Ian, Vaughan, Alun and Quirke, Nick (2019) Electrical conductivity of waxes as model systems for polyethylene: Role of water. Journal of Applied Polymer Science, [48765]. (doi:10.1002/app.48765).

Record type: Article

Abstract

Novel experimental and theoretical studies of the electrical conductivity of high-purity dodecane, paraffin wax and low density polyethylene are reported herein. The role of the charge density, water content and phase changes in determining conductivity as the temperature increases from 25 oC to 65 oC, a temperature range relevant to applications of insulating materials, is determined. Low levels of absorbed water determine the measured conductivity for T< 50 oC and this can be explained by taking account of the charge carriers produced by the auto-ionisation of water. In comparison to commercial polyethylene and lubricating oils, the temperature dependence of the conductivity of dry n-dodecane is anomalously high.

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More information

Accepted/In Press date: 17 November 2019
e-pub ahead of print date: 30 November 2019
Keywords: Electrical Conductivity, Waxes, Water

Identifiers

Local EPrints ID: 436239
URI: http://eprints.soton.ac.uk/id/eprint/436239
ISSN: 0021-8995
PURE UUID: 3796d5e4-fed5-4eb8-ab29-93778f668aa2
ORCID for Ian Hosier: ORCID iD orcid.org/0000-0003-4365-9385
ORCID for Alun Vaughan: ORCID iD orcid.org/0000-0002-0535-513X

Catalogue record

Date deposited: 04 Dec 2019 17:30
Last modified: 31 Jan 2020 01:28

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Contributors

Author: Ian Hosier ORCID iD
Author: Alun Vaughan ORCID iD
Author: Nick Quirke

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