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


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

Download

[img] Microsoft Word (Dispersion and Rheology of Poly(ethylene oxide) / MMT Nanocomposites) - Published Version
Download (1924Kb)

Description/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.

Item Type: Conference or Workshop Item (Paper)
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science
Faculty of Physical Sciences and Engineering > Electronics and Computer Science > EEE
ePrint ID: 268414
Date Deposited: 27 Jan 2010 12:02
Last Modified: 27 Mar 2014 20:15
Further Information:Google Scholar
ISI Citation Count:0
URI: http://eprints.soton.ac.uk/id/eprint/268414

Actions (login required)

View Item View Item

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