食品软包装用透明高阻隔涂料:PVA涂料研究进展  

Research progress on transparent and high barrier PVA coatings for flexible food packaging

作　　者：朱清梅 陈秀琼 李东泽 陆金裕 颜慧琼 林强[1,2,3] ZHU Qingmei;CHEN Xiuqiong;LI Dongze;LU Jingyu;YAN Huiqiong;LIN Qiang(Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province,Haikou 571158,Hainan,China;Key Laboratory of Natural Polymer Functional Material of Haikou City,Haikou 571158,Hainan,China;Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education,Hainan Normal University,Haikou 571158,Hainan,China)

机构地区：[1]海南省水环境污染治理与资源化重点实验室,海南海口571158 [2]海口市天然高分子功能材料重点实验室,海南海口571158 [3]海南师范大学热带药用植物化学教育部重点实验室,海南海口571158

出　　处：《精细化工》2022年第9期1729-1738,1746,共11页Fine Chemicals

基　　金：国家自然科学基金(51963009);海南省重点研发项目(ZDYF2019018);海南省自然科学基金(220MS035)。

摘　　要：聚乙烯醇(PVA)因其良好的透明性和成膜性以及优异的氧气和有机溶剂阻隔性,可用作透明、易回收、环境友好型食品高阻隔软包装材料。但PVA涂层对湿度敏感性差及不具有水蒸气阻隔性能限制了PVA的发展。针对这一问题,目前主要有两种解决方法:一种是PVA化学交联,即PVA能进行多元醇的酯化、醚化、缩醛化等化学反应;另一种是制备PVA-纳米复合涂料,即PVA与纳米层状材料如蒙脱土以及氧化石墨烯等复合。分别从PVA的阻隔性及其影响因素、化学交联PVA涂料以及PVA-纳米复合涂料的最新研究进展进行了综述,分析了改性PVA涂料面临的问题,展望其未来研究方向。Poly(vinyl alcohol)(PVA)has been widely used as transparent,recyclable,and environmentalfriendly high-barrier flexible food packaging materials due to its good transparency,film-forming ability,and excellent oxygen and organic solvent barrier properties.However,further application of PVA coating is restricted by its low humidity sensitivity and high water vapor permeability.This problem could be improved by PVA cross-linking via esterification,etherification and acetalization,or PVA composition with nano layered materials such as montmorillonite and graphene oxide composite.The latest research progress of barrier properties and influencing factors of PVA and PVA coatings modification via chemical cross-linking and nano-composition were summarized and reviewed.Finally,the existing challenges and future directions of PVA coatings modification were discussed.

关 键 词：食品软包装 高阻隔 PVA涂布液 化学交联 复合涂料 

分 类 号：TS206.4[轻工技术与工程—食品科学] TQ630.7[轻工技术与工程—食品科学与工程]