ORIGINAL ARTICLE
The effect of electrospun polylactic acid/chitosan nanofibers on the low density polyethylene/ploy lactic acid film as bilayer antibacterial active packaging films
Samira Dehghani,
Karamatollah Rezaei,
Hamed Hamishehkar,
Abdulrasoul Oromiehie,
Samira Dehghani
Department of Food Science, Engineering and Technology, University of Tehran, Karaj, Iran
Search for more papers by this authorCorresponding Author
Karamatollah Rezaei
Department of Food Science, Engineering and Technology, University of Tehran, Karaj, Iran
Correspondence
Karamatollah Rezaei, Department of Food Science, Engineering and Technology, University of Tehran, Karaj 31587-77871, Iran.
Email: [email protected]
Search for more papers by this authorHamed Hamishehkar
Drug Applied Research Center, Tabriz University of Medical Science, Tabriz, Iran
Search for more papers by this authorAbdulrasoul Oromiehie
Polymer and Petrochemical Research Institute of Iran, Tehran, Iran
Search for more papers by this authorSamira Dehghani,
Karamatollah Rezaei,
Hamed Hamishehkar,
Abdulrasoul Oromiehie,
Samira Dehghani
Department of Food Science, Engineering and Technology, University of Tehran, Karaj, Iran
Search for more papers by this authorCorresponding Author
Karamatollah Rezaei
Department of Food Science, Engineering and Technology, University of Tehran, Karaj, Iran
Correspondence
Karamatollah Rezaei, Department of Food Science, Engineering and Technology, University of Tehran, Karaj 31587-77871, Iran.
Email: [email protected]
Search for more papers by this authorHamed Hamishehkar
Drug Applied Research Center, Tabriz University of Medical Science, Tabriz, Iran
Search for more papers by this authorAbdulrasoul Oromiehie
Polymer and Petrochemical Research Institute of Iran, Tehran, Iran
Search for more papers by this authorAbstract
Bilayer antibacterial films were prepared using electrospun polylactic acid (PLA)/chitosan (Ch) nanofiber on low-density polyethylene (LDPE)/PLA films. Blends of Ch and PLA with the selected ratios of 5.0%, 10.0%, 15.0%, and 20.0% Ch were electrospun on the surface of LDPE/PLA composite film. Scanning electron microscopic images indicated a smooth and bead-free surface for all composite nanofibers with a diameter range from 50–200 nm. Fourier transform infrared spectra depict the presence of PLA and CH in the nanofiber. Hydrophobicity analysis showed that the PLA/Ch layer increase the hydrophobicity of bilayer films. The water vapor permeabilities of bilayer films were lower than those of LDPE/PLA film. The presence of PLA/Ch nanofiber layer resulted in the reduction in the oxygen permeability of bilayer films. When Ch content reached 10.0%, the bilayer films showed antibacterial activities against Escherichia coli and Staphylococcus aureus.
Novelty impact statement
Blends of chitosan and polylactic acid (PLA) was electrospun on to the surface of a low-density polyethylene (LDPE)/PLA film to produce bilayer antibacterial films. Electrospun nanofiber layers improved the antibacterial properties of the films and also reduced the oxygen and water vapor permeability levels of LDPE/PLA composite films without major interferences with their intrinsic physical and barrier properties.
CONFLICTS OF INTEREST
The authors have declared no conflicts of interest for this article
Open Research
DATA AVAILABILITY STATEMENT
Data will be available upon request.
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