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Studies on the effect of equi-biaxial stretching on the exfoliation of nanoclays in polyethylene terephthalate
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Rajeev, R. S., Harkin-Jones, E., Soon, K., McNally, Tony, Menary, G., Armstrong, C. G. and Martin, P. J. (2009) Studies on the effect of equi-biaxial stretching on the exfoliation of nanoclays in polyethylene terephthalate. European Polymer Journal, 45 (2). pp. 332-340. doi:10.1016/j.eurpolymj.2008.10.036 ISSN 0014-3057.
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Official URL: http://dx.doi.org/10.1016/j.eurpolymj.2008.10.036
Abstract
TEM image analyses of PET nanocomposites were done to study the effect of equi-biaxial stretching and stretch ratio on the exfoliation and other tactoid properties. Though XRD spectra did not show any evidence of exfoliation, TEM image analysis revealed 10% exfoliation of clay platelets in the unstretched sheets. Stretching further improved the exfoliation as the concentration of thinner tactoids in the matrix increased due to stretching. Stretching also caused an increase in the concentration of longer tactoids and tactoids having higher aspect ratio, the reason for which was assumed to be due to the slippage of the platelets while stretching. It was found that stretch ratio affected the nanocomposite properties as increase in stretch ratio improved the exfoliation of clay platelets. Equi-biaxial stretching imparted preferential orientation of the tactoids in the matrix. Dynamic mechanical and barrier property measurements confirmed the observations made by the TEM image analysis.
Item Type: | Journal Article | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Library of Congress Subject Headings (LCSH): | Nanocomposites (Materials), Polymers, Clay minerals, Transmission electron microscopy, Polyethylene terephthalate | ||||
Journal or Publication Title: | European Polymer Journal | ||||
Publisher: | Pergamon | ||||
ISSN: | 0014-3057 | ||||
Official Date: | February 2009 | ||||
Dates: |
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Volume: | 45 | ||||
Number: | 2 | ||||
Page Range: | pp. 332-340 | ||||
DOI: | 10.1016/j.eurpolymj.2008.10.036 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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