What You Need to Know
Polymer films such as PLA provide oxygen barriers (≤0.1 cm³·mm/m²·day) up to 80 °C, while PHA films biodegrade in compost at 58 °C with 50 % moisture within 60 days. Chitosan coatings infused with essential oils (e.g., thymol 0.5 % w/w) inhibit Listeria growth, and mycelium‑based composites offer high tensile strength and rapid biodegradation. Bamboo fiber packaging reduces moisture uptake, preserving crispness.
The Science
Primary Reaction
Barrier formation and biodegradation of polymers, and antimicrobial action of chitosan coatings