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The effect of temperature and strain rate on the deformation behaviour, structure development and properties of biaxially stretched PET–clay nanocomposites
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Shen, Yucai, Harkin-Jones, Eileen, Hornsby, Peter, McNally, Tony and Abu-Zurayk, Rund (2011) The effect of temperature and strain rate on the deformation behaviour, structure development and properties of biaxially stretched PET–clay nanocomposites. Composites Science and Technology, 71 (5). pp. 758-764. doi:10.1016/j.compscitech.2011.01.024 ISSN 0266-3538.
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Official URL: http://dx.doi.org/10.1016/j.compscitech.2011.01.02...
Abstract
The inclusion of a synthetic fluoromica clay in PET affects its processability via biaxial stretching and stretching temperature (95 °C and 102 °C) and strain rate (1 s−1 and 2 s−1) influence the structuring and properties of the stretched material. The inclusion of clay has little effect on the temperature operating window for the PET–clay but it has a major effect on deformation behaviour which will necessitate the use of much higher forming forces during processing. The strain hardening behaviour of both the filled and unfilled materials is well correlated with tensile strength and tensile modulus. Increasing the stretching temperature to reduce stretching forces has a detrimental effect on clay exfoliation, mechanical and O2 barrier properties. Increasing strain rate has a lesser effect on the strain hardening behaviour of the PET–clay compared with the pure PET and this is attributed to possible adiabatic heating in the PET–clay sample at the higher strain rate. The Halpin–Tsai model is shown to accurately predict the modulus enhancement of the PET–clay materials when a modified particle modulus rather than nominal clay modulus is used.
Item Type: | Journal Article | ||||
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Subjects: | T Technology > TN Mining engineering. Metallurgy | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Library of Congress Subject Headings (LCSH): | Clay, Nanostructured materials, Clay minerals, Electron microscopy | ||||
Journal or Publication Title: | Composites Science and Technology | ||||
Publisher: | Pergamon | ||||
ISSN: | 0266-3538 | ||||
Official Date: | 22 March 2011 | ||||
Dates: |
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Volume: | 71 | ||||
Number: | 5 | ||||
Page Range: | pp. 758-764 | ||||
DOI: | 10.1016/j.compscitech.2011.01.024 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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