The University of Southampton
University of Southampton Institutional Repository

Polyethylene/silica nanocomposites: absorption current and the interpretation of SCLC

Polyethylene/silica nanocomposites: absorption current and the interpretation of SCLC
Polyethylene/silica nanocomposites: absorption current and the interpretation of SCLC
The topic of nanodielectrics continues to receive significant attention from today’s dielectrics community, due to the property enhancements that can stem from the unique interfacial features within such material systems. Nevertheless, understanding of the interfacial phenomena that occur in nanodielectrics and which determine their electrical behaviour is challenging. In this paper, we report on an investigation into the absorption current behaviour of two nanocomposite systems, one containing an untreated nanosilica and the other containing the same nanofiller chemically modified using trimethoxy(propyl)silane. The results indicate that the absorption current behaviour of all the nanocomposites is very different from that of the reference, unfilled polymer; while the current flowing through the unfilled polyethylene decreased monotonically with time in a conventional manner, all nanocomposites revealed an initial decrease followed by a period in which the current increased with increasing time of electric field application. Possible mechanisms leading to the observed absorption current behaviour in the nanocomposites are discussed with the aid of space charge measurements. The presence of space charge limited conduction (SCLC) and its trap-filled limit is proposed.
0022-3727
Lau, Kwan
85174aa9-d155-4e8c-82e5-9030accc3db2
Vaughan, Alun
6d813b66-17f9-4864-9763-25a6d659d8a3
Chen, Guanghui
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Hosier, Ian
6a44329e-b742-44de-afa7-073f80a78e26
Ching, K.Y.
94062772-83df-480e-b93f-b803c6217fdf
Quirke, Nick
631f103a-1811-42c9-9b54-700284bcca0f
Lau, Kwan
85174aa9-d155-4e8c-82e5-9030accc3db2
Vaughan, Alun
6d813b66-17f9-4864-9763-25a6d659d8a3
Chen, Guanghui
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Hosier, Ian
6a44329e-b742-44de-afa7-073f80a78e26
Ching, K.Y.
94062772-83df-480e-b93f-b803c6217fdf
Quirke, Nick
631f103a-1811-42c9-9b54-700284bcca0f

Lau, Kwan, Vaughan, Alun, Chen, Guanghui, Hosier, Ian, Ching, K.Y. and Quirke, Nick (2016) Polyethylene/silica nanocomposites: absorption current and the interpretation of SCLC. Journal of Physics D: Applied Physics, 49 (29), [295305]. (doi:10.1088/0022-3727/49/29/295305).

Record type: Article

Abstract

The topic of nanodielectrics continues to receive significant attention from today’s dielectrics community, due to the property enhancements that can stem from the unique interfacial features within such material systems. Nevertheless, understanding of the interfacial phenomena that occur in nanodielectrics and which determine their electrical behaviour is challenging. In this paper, we report on an investigation into the absorption current behaviour of two nanocomposite systems, one containing an untreated nanosilica and the other containing the same nanofiller chemically modified using trimethoxy(propyl)silane. The results indicate that the absorption current behaviour of all the nanocomposites is very different from that of the reference, unfilled polymer; while the current flowing through the unfilled polyethylene decreased monotonically with time in a conventional manner, all nanocomposites revealed an initial decrease followed by a period in which the current increased with increasing time of electric field application. Possible mechanisms leading to the observed absorption current behaviour in the nanocomposites are discussed with the aid of space charge measurements. The presence of space charge limited conduction (SCLC) and its trap-filled limit is proposed.

Text
Revised Manuscript Accepted.pdf - Accepted Manuscript
Download (707kB)

More information

Accepted/In Press date: 1 June 2016
e-pub ahead of print date: 1 July 2016
Organisations: EEE

Identifiers

Local EPrints ID: 396448
URI: http://eprints.soton.ac.uk/id/eprint/396448
ISSN: 0022-3727
PURE UUID: e0cc9491-021d-42f3-9e77-ec78f39a121e
ORCID for Alun Vaughan: ORCID iD orcid.org/0000-0002-0535-513X
ORCID for Ian Hosier: ORCID iD orcid.org/0000-0003-4365-9385

Catalogue record

Date deposited: 09 Jun 2016 13:10
Last modified: 07 Oct 2020 05:28

Export record

Altmetrics

Contributors

Author: Kwan Lau
Author: Alun Vaughan ORCID iD
Author: Guanghui Chen
Author: Ian Hosier ORCID iD
Author: K.Y. Ching
Author: Nick Quirke

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×