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    Advances in sustainable food packaging applications of chitosan/polyvinyl alcohol blend films
    (Elsevier Sci Ltd, 2024) Zhang, Wanli; Khan, Ajahar; Ezati, Parya; Priyadarshi, Ruchir; Sani, Mahmood Alizadeh; Rathod, Nikheel Bhojraj; Goksen, Gulden
    Researchers are addressing environmental concerns related to petroleum -based plastic packaging by exploring biopolymers from natural sources, chemical synthesis, and microbial fermentation. Despite the potential of individual biopolymers, they often exhibit limitations like low water resistance and poor mechanical properties. Blending polymers emerges as a promising strategy to overcome these challenges, creating films with enhanced performance. This review focuses on recent advancements in chitosan/polyvinyl alcohol (PVA) blend food packaging films. It covers molecular structure, properties, strategies for performance improvement, and applications in food preservation. The blend's excellent compatibility and intermolecular interactions make it a promising candidate for biodegradable films. Future research should explore large-scale thermoplastic technologies and investigate the incorporation of additives like natural extracts and nanoparticles to enhance film properties. Chitosan/PVA blend films offer a sustainable alternative to petroleum -based plastic packaging, with potential applications in practical food preservation.