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Dispersion and Rheology of Poly(ethylene oxide) / MMT Nanocomposites

Dispersion and Rheology of Poly(ethylene oxide) / MMT Nanocomposites
Dispersion and Rheology of Poly(ethylene oxide) / MMT Nanocomposites
The topic of nanodielectrics is one that has grown enormously in importance since Lewis first introduced the concept of a nanodielectric in 1994. However, while nanodielectrics exhibit great promise, changes in macroscopic physical properties are determined by dispersion, and therefore it is imperative that reliable methods are available for the cost-effective determination of the dispersion state of the nanofiller in the host polymeric matrix. This paper details an investigation into the rheological response of PEO / montmorillonite (MMT) nanocomposites; MMT is a polar material and is therefore relatively compatible with aqueous systems. Three molecular weight PEOs were used - 100,000 g mol-1, 400,000 g mol-1 and 1,000,000 g mol-1. The rheological behaviour of a range of systems containing various levels of MMT were then studied, with the twin objectives of (a) producing materials with different shear histories and different degrees of MMT dispersion for study as described elsewhere [1] and (b) to explore rheological response as a practical means of determining the dispersion state of a nanofiller in a liquid polymer. This would have great practical utility as a quality control device in, for example, the production of epoxy-based nanodielectrics. In this paper we concentrate on the latter aspect of the work and describe the effect of polymer molar mass, polymer concentration, imposed shear history and nanofiller loading level on the rheological behaviour of the system.
Reading, Martin
6a4d8a5d-38c3-43ef-bcac-e9848eec8177
Vaughan, Alun
6d813b66-17f9-4864-9763-25a6d659d8a3
Reading, Martin
6a4d8a5d-38c3-43ef-bcac-e9848eec8177
Vaughan, Alun
6d813b66-17f9-4864-9763-25a6d659d8a3

Reading, Martin and Vaughan, Alun (2008) Dispersion and Rheology of Poly(ethylene oxide) / MMT Nanocomposites. CEIDP 2008.

Record type: Conference or Workshop Item (Paper)

Abstract

The topic of nanodielectrics is one that has grown enormously in importance since Lewis first introduced the concept of a nanodielectric in 1994. However, while nanodielectrics exhibit great promise, changes in macroscopic physical properties are determined by dispersion, and therefore it is imperative that reliable methods are available for the cost-effective determination of the dispersion state of the nanofiller in the host polymeric matrix. This paper details an investigation into the rheological response of PEO / montmorillonite (MMT) nanocomposites; MMT is a polar material and is therefore relatively compatible with aqueous systems. Three molecular weight PEOs were used - 100,000 g mol-1, 400,000 g mol-1 and 1,000,000 g mol-1. The rheological behaviour of a range of systems containing various levels of MMT were then studied, with the twin objectives of (a) producing materials with different shear histories and different degrees of MMT dispersion for study as described elsewhere [1] and (b) to explore rheological response as a practical means of determining the dispersion state of a nanofiller in a liquid polymer. This would have great practical utility as a quality control device in, for example, the production of epoxy-based nanodielectrics. In this paper we concentrate on the latter aspect of the work and describe the effect of polymer molar mass, polymer concentration, imposed shear history and nanofiller loading level on the rheological behaviour of the system.

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More information

Published date: 2008
Venue - Dates: CEIDP 2008, 2008-01-01
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 268414
URI: https://eprints.soton.ac.uk/id/eprint/268414
PURE UUID: d46ad9da-c419-4c3f-90fe-f4b2eaa9388e
ORCID for Alun Vaughan: ORCID iD orcid.org/0000-0002-0535-513X

Catalogue record

Date deposited: 27 Jan 2010 12:02
Last modified: 09 May 2019 00:36

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Contributors

Author: Martin Reading
Author: Alun Vaughan ORCID iD

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