Influence of incorporation of ZnO nanoparticles and biaxial orientation on mechanical and oxygen barrier properties of polypropylene films for food packaging applications

In this work, the effect of zinc oxide (ZnO) concentration and shape on processing and properties of new biaxially oriented polypropylene (BOPP)-ZnO nanocomposites was studied. The use of spherical nanoparticles and nanorods was expected to differently influence the properties of the final material....

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Bibliographic Details
Published in:Journal of applied polymer science Vol. 120; no. 3; pp. 1616 - 1623
Main Authors: Lepot, N, Van Bael, M.K, Van den Rul, H, D'Haen, J, Peeters, R, Franco, D, Mullens, J
Format: Journal Article
Language:English
Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 05.05.2011
Wiley
Wiley Subscription Services, Inc
Subjects:
Applied sciences
Barriers
Composites
Exact sciences and technology
Food packaging
Forms of application and semi-finished materials
gas transport
Materials science
Nanocomposites
Nanoparticles
Nanorods
Orientation
Polymer industry, paints, wood
Polymers
Polypropylenes
Technology of polymers
tensile strength
Zinc oxide
ZnO-BOPP nanocomposites
Transport properties
ZnO-BOPP nanocomposites
Dispersion degree
Propylene polymer
Temperature effect
Mechanical properties
Dispersion reinforced material
Biaxial drawing
Experimental study
Composite material
Tensile strength
Biaxial orientation
Gas permeability
Oriented polymer
Plastic bag packaging
Morphology
Isotactic polymer
gas transport
Concentration effect
Olefin polymer
Zinc oxide
Nanocomposite
Nanorod
ISSN:0021-8995, 1097-4628, 1097-4628
Online Access:Get full text
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Summary:In this work, the effect of zinc oxide (ZnO) concentration and shape on processing and properties of new biaxially oriented polypropylene (BOPP)-ZnO nanocomposites was studied. The use of spherical nanoparticles and nanorods was expected to differently influence the properties of the final material. Films of isotactic polypropylene prepared with different ZnO incorporation were biaxially oriented under conditions of temperature and strain rate that were similar to those encountered in a commercial film process. Scanning electron microscopy analysis was performed to visualize the dispersion degree of the ZnO nanoparticles in the polymer matrix and to observe the surface and the orientation of the elongated nanoparticles. Furthermore, the prepared ZnO-BOPP nanocomposites were evaluated for both mechanical and oxygen barrier property enhancement. A good combination of mechanical and oxygen barrier properties was obtained for the ZnO-BOPP films. This result makes the ZnO-BOPP nanocomposite a proper material for applications such as food packaging.
Bibliography:http://dx.doi.org/10.1002/app.33277
ArticleID:APP33277
istex:46ABC3EE89F351E9F0AF0FFFF9E8B8AEAA87CD6B
ark:/67375/WNG-V1GZ1C02-1
Fund for Scientific Research of Flanders (FWO Vlaanderen) (to M. K. V. B.)
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ISSN:0021-8995
1097-4628
1097-4628
DOI:10.1002/app.33277