Morphology, barrier, and mechanical properties of biaxially deformed poly(ethylene terephthalate)-mica nanocomposites

Kok Soon, Eileen Harkin-Jones, Rajvihar S. Rajeev, Gary Menary, Peter J. Martin, Cecil G. Armstrong

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Nanocomposites of poly(ethylene terephthalate) PET with a partially synthetic fluoromica were prepared by melt mixing and extruded into sheet and subjected to large-scale biaxial stretching. Transmission electron microscopy (TEM) analysis of the mica tactoids showed that biaxial stretching had caused the tactoids to be more orientated and with improved exfoliation. The moduli of the nanocomposites were enhanced with increasing mica loading and the reinforcement effect was higher when the stretch ratio was 2 or 2.5, accommodated by having more aligned tactoids and reduced agglomeration. Enhancement in modulus was less pronounced for a stretch ratio of 3. Storage modulus was enhanced more significantly above the glass transition temperature. The barrier properties were enhanced by addition of mica before and after stretching. The Halpin-Tsai theory underpredicted the relative modulus of the PET nanocomposites, whereas the Nielsen model over-predicted the relative permeability.

LanguageEnglish
Pages532-548
Number of pages17
JournalPolymer Engineering and Science
Volume52
Issue number3
DOIs
Publication statusPublished - 1 Mar 2012

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Polyethylene Terephthalates
Mica
Polyethylene terephthalates
Stretching
Nanocomposites
Mechanical properties
Reinforcement
Agglomeration
Elastic moduli
Transmission electron microscopy
mica

Cite this

Soon, Kok ; Harkin-Jones, Eileen ; Rajeev, Rajvihar S. ; Menary, Gary ; Martin, Peter J. ; Armstrong, Cecil G. / Morphology, barrier, and mechanical properties of biaxially deformed poly(ethylene terephthalate)-mica nanocomposites. In: Polymer Engineering and Science. 2012 ; Vol. 52, No. 3. pp. 532-548.
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Morphology, barrier, and mechanical properties of biaxially deformed poly(ethylene terephthalate)-mica nanocomposites. / Soon, Kok; Harkin-Jones, Eileen; Rajeev, Rajvihar S.; Menary, Gary; Martin, Peter J.; Armstrong, Cecil G.

In: Polymer Engineering and Science, Vol. 52, No. 3, 01.03.2012, p. 532-548.

Research output: Contribution to journalArticle

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