Morphology and properties of polymer/organoclay nanocomposites based on poly(ethylene terephthalate) and sulfopolyester blends

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DOIResolve DOI: http://doi.org/10.1002/pi.4331
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TypeArticle
Journal titlePolymer International
ISSN0959-8103
Volume62
Issue3
Pages439448; # of pages: 10
SubjectCharacterization techniques; Clay particles; Cloisite 30b; Crystallinities; Dispersed phase; Gas barrier; Immiscible polymer blends; Melt blending; Organoclays; Oxygen permeability; Poly(ethylene terephthalate) (PET); Rheometry; Scanning electrons; Tactoids; Blending; Differential scanning calorimetry; Dispersions; Ionomers; Nanocomposite films; Organoclay; Polyethylene terephthalates; Rheology; Scanning electron microscopy; Transmission electron microscopy; X ray diffraction; Nanocomposites
AbstractPoly(ethylene terephthalate) (PET) nanocomposite films containing two different organoclays, Cloisite 30B® (C30B) and Nanomer I.28E® (N28E), were prepared by melt blending. In order to increase the gallery spacing of the clay particles, a sulfopolyester (PET ionomer or PETi) was added to the nanocomposites via a master-batch approach. The morphological, thermal and gas barrier characteristics of the nanocomposite films were studied using several characterization techniques such as scanning electron microscopy, transmission electron microscopy, X-ray diffraction, differential scanning calorimetry, dynamic mechanical analysis, rheometry and oxygen permeability. PET and PETi were found to form immiscible polymer blends and the nanoparticles were preferentially located in the PETi dispersed phase. A better dispersion of clay was obtained for nanocomposites containing N28E with PETi. On the contrary, for nanocomposites containing C30B and PETi, the number of tactoids increased and the clay distribution and dispersion became worse than for C30B alone. Overall, the best properties were obtained for the PET/C30B nanocomposite without PETi. Higher crystallinity was found for all nanocomposite films in comparison to that of neat PET. © 2012 Society of Chemical Industry The effect of a sulfopolyester (poly(ethylene terephthalate) (PET) ionomer or PETi) on the properties of PET/clay nanocomposites was investigated. It was found that nanoclay particles have greater affinity for the PETi phase. © 2012 Society of Chemical Industry.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Industrial Materials Institute (IMI-IMI)
Peer reviewedYes
NPARC number21269676
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Record identifier4b901701-c7fd-47ae-af4b-2266964227f1
Record created2013-12-13
Record modified2016-05-09
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