Keywords: polyethylene, polyglycerol fatty acid ester, anti-fog masterbatch, sodium dehydroacetate, calcium propionate, anti-fog, physical properties, antimicrobial properties.
Polyglycerol Fatty Acid Ester (PGFE) and laboratory-made masterbatch (YS) are chosen as anti-fog additives, while calcium propionate (CP) and sodium dehydroacetate (referred to as DHA-S) are selected as antimicrobial agents. These antimicrobial and anti-fog agents are mixed with polyethylene (PE) particles and then granulated. The resulting granules are processed on a casting machine to produce anti-fog and antimicrobial polyethylene (PE) active packaging film, with the formulation optimized through orthogonal experiments.
Experimental results reveal that compared to pure PE film, films containing YS, PGFE, DHA-S, and CP exhibit superior anti-fog properties, tensile strength, and effective antimicrobial performance against test bacteria. However, these films have lower light transmittance, elongation at break, and barrier properties.
In conclusion, polyethylene films modified with anti-fog and antimicrobial agents demonstrate excellent antimicrobial and anti-fog effects while maintaining satisfactory physical properties, making them suitable for use as food packaging materials.
