Developed flexible PLA films enhance barrier properties and antimicrobial activity using SBA-15 encapsulated cinnamon oil, indicating substantial application potential.
Key Points
The composite films showcased superior barrier properties, achieving water vapor permeability of 2.6 × 10^-13 g·cm/(cm²·s·Pa) and oxygen transmission rate of 4.5 × 10^-13 cm³·cm/(cm²·s·Pa).
Enhanced flexibility was observed, with a tensile strength of 16.0 MPa and crystallinity of 32.4%, providing improved mechanical performance in packaging applications.
Antioxidant activity of 34.4% against 1,1-diphenyl-2-trinitrophenylhydrazine was noted, contributing to the preservation efficacy of the films for food packaging.
The controlled release of cinnamon oil followed Higuchi model, confirming effective diffusion, which may help improve food safety and shelf-life.