Journal of Thermal Analysis and Calorimetry

, Volume 94, Issue 3, pp 687–693

Water vapour barrier performance of corn-zein coated polypropylene (PP) packaging films

Article

DOI: 10.1007/s10973-008-9360-0

Cite this article as:
Doğan Atik, İ., Özen, B. & Tıhmınlıoğlu, F. J Therm Anal Calorim (2008) 94: 687. doi:10.1007/s10973-008-9360-0

Abstract

The novel film structure of corn-zein coated on polypropylene (PP) synthetic film for packaging industry was developed to examine the feasibility of resulting coated films as an alternative water barrier performance for food packaging. The effects of coating formulation (solvent, corn-zein, plasticizer concentration and plasticizer type) on final properties of films were observed. Corn-zein is the most important protein of corn and has good film forming property. Composites structures of PP films coated with corn-zein were obtained through a simple solvent casting method. Polyethylene glycol (PEG) and glycerol (GLY) were used as plasticizer to increase film flexibility. Statistical analysis based on full factorial design was performed to observe coating formulation effects. The high water vapour barriers were obtained for films coated with coating formulation consisting of higher amounts of corn-zein plasticized by GLY. The lower glass transition temperatures (Tg) of films were obtained by plasticization of films and Tg decreased by increasing plasticizer content. The statistical analysis defined the key parameters of coating formulation that had major effects on the final properties of coated PP films as corn-zein, plasticizer concentration and plasticizer type. In conclusion, corn-zein coatings could have potential as an alternative to conventional synthetic polymers used in composite multilayer structures for food packaging applications.

Keywords

coating corn zein packaging polypropylene water vapor barrier 

Copyright information

© Springer Science+Business Media, LLC. 2008

Authors and Affiliations

  • İsa Doğan Atik
    • 1
  • B. Özen
    • 2
  • F. Tıhmınlıoğlu
    • 1
  1. 1.Department of Chemical Engineering, Faculty of Engineeringİzmir Institute of TechnologyGülbahçe, Urla, İzmirTurkey
  2. 2.Department of Food Engineering, Faculty of Engineeringİzmir Institute of TechnologyGülbahçe, Urla, İzmirTurkey

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