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Investigation of barrier properties of poly(ethylene vinyl acetate)/organociay nanocomposite films prepared by phase inversion method

Shafiee, M ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.1002/masy.200851401
  3. Publisher: 2008
  4. Abstract:
  5. In this research work, to reduce permeability of polyethylene vinyl acetate) packaging films, organoclay nanocomposites of these thermoplastics were prepared by solution method. Organoclay are mixed with polyethylene vinyl acetate (EVA) with 18 and 28% of vinyl acetate (VA) content in solution phase. Solutions of 3, 5 and 7% of organoclay are prepared under reflux condition and then nanocomposite films are prepared by thermal phase inversion method. Morphological and gas barrier properties of different prepared samples have been investigated. Morphology of prepared nanocomposite films and order of exfoliation of clay were investigated using X-ray diffraction (XRD) and transmission electron microscopy (TEM) instruments. XRD and TEM indicated that the prepared nanocomposites had predominantly intercalated morphologies. Gas permeability measurements showed that the presence of organoclay significantly increases the barrier properties of EVA/nanocomposite films even at the low concentration of clay. Copyright © 2008 WILEY-VCH Verlag GmbH & Co. KGaA
  6. Keywords:
  7. Capillarity ; Clay minerals ; Ethylene ; Film preparation ; Gas permeability ; Liquids ; Morphology ; Nanocomposites ; Organoclay ; Plastic coatings ; Solids ; Thermoplastics ; Transmission electron microscopy ; X ray analysis ; X ray diffraction analysis ; Barrier properties ; Ethylene vinyl acetates ; EVA ; Gas barrier properties ; Low concentrations ; Nanocomposite films ; Organoclay nanocomposites ; Packaging films ; Permeability ; Permeability measurements ; Phase inversions ; Polyethylene vinyl acetates ; Reflux conditions ; Research works ; Solution methods ; Vinyl acetates ; X-ray diffractions ; Gas permeable membranes
  8. Source: Macromolecular Symposia ; Volume 274, Issue 1 , 2008 , Pages 1-5 ; 10221360 (ISSN)
  9. URL: https://onlinelibrary.wiley.com/doi/10.1002/masy.200851401