3 years ago

Zeolite A-polypropylene and silver-zeolite A-polypropylene composite films for antibacterial and breathable applications

Zeolite A-polypropylene and silver-zeolite A-polypropylene composite films for antibacterial and breathable applications
Duangamol Nuntasri Tungasmita, Duangkamon Jiraroj, Sukkanaste Tungasmita
Polypropylene (PP) composite films were successfully prepared using melt blending by directly mixing PP pellets with zeolite A or silver-zeolite A powder and then blowing. All the prepared films were characterized in terms of their physical, mechanical, optical, and gas permeability properties. The structure of each composite film was similar to that of the pure PP film. The crystallinity and glossy quality of the composite films were increased by the addition of silver, zeolite, and maleic anhydride grafted PP (PP-g-MA). The composite PP film with zeolite A and PP-g-MA exhibited a level of oxygen and carbon dioxide permeation (6438 and 15,087 cc m−2 day−1 atm−1, respectively). Finally, all the films were evaluated for their antibacterial activity and fruit packaging applications. Silver-zeolite A-PP composite films exhibited a bactericidal activity of 79% against Staphylococcus aureus and 52% against Escherichia coli, while the zeolite A-PP film could extend the shelf-life of bananas for over a week. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45450.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/app.45450

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