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Consequently, the development of biodegradable food\u2010packaging materials has become a central focus of current research. Polyvinyl alcohol (PVA) is a water\u2010soluble polymer exhibiting conditional biodegradability and excellent biocompatibility. Its outstanding film\u2010forming properties, mechanical toughness, thermal stability, and optical transparency have garnered significant attention, positioning it as a promising alternative to conventional plastics. However, systematic research integrating fundamental preparation strategies with functionalization modification methods remains scarce, particularly in comprehensive investigations addressing PVA's inherent hydrophilicity and its impact on high\u2010humidity food systems. This review fills that gap by systematically examining the preparation methods, physicochemical properties, and applications of PVA\u2010based films. It uniquely integrates recent advances in hydrophobic modification, gas\u2010barrier enhancement, and functional additives into a unified framework that links molecular design to practical food\u2010packaging performance. Furthermore, the prospects and challenges of PVA\u2010based packaging are critically discussed. By articulating these insights, this review provides a novel, application\u2010driven perspective that guides targeted modifications and advanced processing technologies to unlock the full potential of PVA for sustainable food packaging.<\/jats:p>","DOI":"10.1111\/1541-4337.70334","type":"journal-article","created":{"date-parts":[[2025,11,12]],"date-time":"2025-11-12T08:41:04Z","timestamp":1762936864000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":33,"title":["Recent Advances in Polyvinyl Alcohol\u2013Based Biodegradable Packaging: Preparation, Modification, and Applications in Food Packaging"],"prefix":"10.1111","volume":"24","author":[{"given":"Yiting","family":"Fan","sequence":"first","affiliation":[{"name":"School of Food Science and Engineering South China University of Technology  Guangzhou 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