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Title: The effect of alternate heating rates during cure on the structure-property relationships of epoxy/MMT clay nanocomposites
Authors: Nuhiji, B
Attard, D
Thorogood, G
Hanley, T
Magniez, K
Fox, B
Keywords: X-ray diffraction
Composite Materials
Transmission Electron Microscopy
Mechanical Properties
Issue Date: 24-Oct-2011
Publisher: ELSEVIER
Citation: Nuhiji, B., Attard, D., Thorogood, G., Hanley, T., Magniez, K. Fox, B. (2011). The effect of alternate heating rates during cure on the structure-property relationships of epoxy/MMT clay nanocomposites. Composites Science and Technology, 71(15), 1761-1768.
Abstract: This paper investigates the effect of both the mixing technique and heating rate during cure on the dispersion of montmorillonite (MMT) clay in an epoxy resin. The combination of sonication and using a 10 degrees C/min heating rate during cure was found to facilitate the dispersion of nanoclay in epoxy resin. These processing conditions provided a synergistic effect, making it possible for polymer chains to penetrate in-between clay galleries and detach platelets from their agglomerates. As the degree of dispersion was enhanced, the flexural modulus and strength properties were found to decrease by 15% and 40%, respectively. This is thought to be due to individual platelets fracturing in the nanocomposite. Complementary techniques including X-ray diffraction (XRD), small angle X-ray scattering (SAXS), scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX). transmission electron microscopy (TEM) and optical microscopy were essential to fully characterise localised and spatial regions of the clay morphologies. (C) 2011 Elsevier Ltd. All rights reserved.
ISSN: 0266-3538
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