Abstract
Enhancing the antimicrobial functions of biodegradable polyesters facilitates the utilization of sustainable food packaging. Poly(butylene succinate) (PBS) and polybutylene adipate terephthalate (PBAT) blends were compounded with zinc oxide (ZnO) nanoparticles (up to 4.5%) into a master batch via twin-screw extrusion. Biodegradable films were produced via cast extrusion, and the morphologies and packaging properties were determined. Adding ZnO nanoparticles up to 2.7% modified the film's surface topography, causing non-homogeneity and voids. ZnO tended to form aggregates at higher loading, while phase separation of metal oxide from PBAT/PBS matrices occurred. Dispersion of ZnO nanoparticles reduced water vapor permeability, with the lowest effects on oxygen permeability. Adding ZnO in combination with the molecular orientation of the polymer effectively reinforced the matrices and improved the mechanical properties of PBAT/PBS blends. PBAT/PBS/ZnO films exhibited antimicrobial capacity against Escherichia coli and Bacillus cereus. PBAT/PBS with ZnO >2.7% delayed discoloration of red pigments in packaged minced pork due to efficient inhibition of microbial growth and UV blocking. ZnO-loaded polyester enhanced antimicrobial functions, producing sustainable active nanocomposite packaging.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
