Development of PE/PCL Bilayer Films Modified with Casein and Aluminum Oxide |
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| Authors: | Anita Pti
ek Siro
i&#x; Ana Re&#x;
ek Zvonimir Katan
i&#x; Zlata Hrnjak-Murgi&#x; |
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| Institution: | 1.Faculty of Geotechnical Engineering, University of Zagreb, Hallerova Aleja 7, 42000 Varaždin, Croatia;2.Faculty of Chemical Engineering of Technology, University of Zagreb, Marulićev Trg 19, P.O. Box 177, HR-10000 Zagreb, Croatia; (A.R.); (Z.K.); (Z.H.-M.) |
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| Abstract: | The studied samples were prepared from polyethylene (PE) polymer which was coated with modified polycaprolactone (PCL) film in order to obtain bilayer films. Thin PCL film was modified with casein/aluminum oxide compound to enhance vapor permeability as well as mechanical and thermal properties of PE/PCL films. Casein/aluminum oxide modifiers were used in order to achieve some functional properties of polymer film that can be used in various applications, e.g., reduction of water vapor permeability (WVTR) and good mechanical and thermal properties. Significant improvement was observed in mechanical properties, especially in tensile strength as well as in water vapor values. Samples prepared with aluminum oxide particles indicated significantly lower values up to 60%, and samples that were prepared with casein and 5% Al2O3 showed the lowest WVTR value. |
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| Keywords: | polyethylene polycaprolactone casein aluminum oxide barrier properties water vapor permeability |
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