Investigation of Barrier Properties of Poly(ethylene vinyl acetate)/Organoclay Nanocomposite Films Prepared by Phase Inversion Method

In this research work, to reduce permeability of poly(ethylene 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 phas...

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Bibliographic Details
Published in:Macromolecular symposia 2008-12, Vol.274 (1), p.1-5
Main Authors: Shafiee, M, Ramazani S.A., A
Format: Article
Language:English
Subjects:
Applied sciences
Barriers
Composites
Ethylene vinyl acetates
EVA
Exact sciences and technology
Forms of application and semi-finished materials
morphology
Nanocomposites
Nanomaterials
Nanostructure
organoclay
permeability
Phase shift
Polymer industry, paints, wood
solution
Technology of polymers
Transmission electron microscopy
Vinyl acetate
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Summary:In this research work, to reduce permeability of poly(ethylene 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.
ISSN:1022-1360
1521-3900
DOI:10.1002/masy.200851401