{"title":"开发食品包装用绿原酸和功能化层状粘土增强的聚乙烯醇基活性内涂层","authors":"","doi":"10.1016/j.porgcoat.2024.108740","DOIUrl":null,"url":null,"abstract":"<div><p>Food packaging is developing towards more environmentally friendly polymer matrix and superior active functions. In this study, polyvinyl alcohol (PVA) based active coating incorporating chlorogenic acid (CGA) and CGA functionalized layered clay (LDHs@CGA) was applied to construct polylactic acid (PLA) three-layer active films on fully biodegradable PLA base film. The results indicated that PVA based active coating using dual coating technology (LDHs@CGA/PVA + CGA/PVA) had no visible interface and a uniform thickness, ranging from 4 to 5 μm. When the amount of LDHs@CGA was 1 wt%, the release of CGA in the active intermediate layer (CGA/PVA coating) was limited due to the natural barrier of LDHs@CGA in the controlled release layer (LDHs@CGA/PVA coating), resulting in a decrease in active functions. When the amount of LDHs@CGA reached 3 wt%, the antioxidant (DPPH method), antibacterial (<em>Escherichia coli</em>), and UV absorption (at 335 nm) reached 85.6 %, 87.2 %, and 73.2 %, respectively. This was because in addition to CGA as the main active substance, sufficient amounts of LDHs@CGA can also serve as secondary active substance to supplement the release of CGA. Meanwhile, the addition of LDHs@CGA could significantly improve the gas barrier properties of PVA based active coating, and the barrier to oxygen was much higher than that to water vapor. This study proposes a method of constructing PLA three-layer active films by coating with PVA based active inner coating, which can more effectively and stably exert the active functions for food packaging applications.</p></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":null,"pages":null},"PeriodicalIF":6.5000,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Development of polyvinyl alcohol based active inner coating reinforced with chlorogenic acid and functionalized layered clay for food packaging\",\"authors\":\"\",\"doi\":\"10.1016/j.porgcoat.2024.108740\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Food packaging is developing towards more environmentally friendly polymer matrix and superior active functions. In this study, polyvinyl alcohol (PVA) based active coating incorporating chlorogenic acid (CGA) and CGA functionalized layered clay (LDHs@CGA) was applied to construct polylactic acid (PLA) three-layer active films on fully biodegradable PLA base film. The results indicated that PVA based active coating using dual coating technology (LDHs@CGA/PVA + CGA/PVA) had no visible interface and a uniform thickness, ranging from 4 to 5 μm. When the amount of LDHs@CGA was 1 wt%, the release of CGA in the active intermediate layer (CGA/PVA coating) was limited due to the natural barrier of LDHs@CGA in the controlled release layer (LDHs@CGA/PVA coating), resulting in a decrease in active functions. When the amount of LDHs@CGA reached 3 wt%, the antioxidant (DPPH method), antibacterial (<em>Escherichia coli</em>), and UV absorption (at 335 nm) reached 85.6 %, 87.2 %, and 73.2 %, respectively. This was because in addition to CGA as the main active substance, sufficient amounts of LDHs@CGA can also serve as secondary active substance to supplement the release of CGA. Meanwhile, the addition of LDHs@CGA could significantly improve the gas barrier properties of PVA based active coating, and the barrier to oxygen was much higher than that to water vapor. This study proposes a method of constructing PLA three-layer active films by coating with PVA based active inner coating, which can more effectively and stably exert the active functions for food packaging applications.</p></div>\",\"PeriodicalId\":20834,\"journal\":{\"name\":\"Progress in Organic Coatings\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":6.5000,\"publicationDate\":\"2024-08-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Progress in Organic Coatings\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0300944024005320\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Progress in Organic Coatings","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0300944024005320","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
Development of polyvinyl alcohol based active inner coating reinforced with chlorogenic acid and functionalized layered clay for food packaging
Food packaging is developing towards more environmentally friendly polymer matrix and superior active functions. In this study, polyvinyl alcohol (PVA) based active coating incorporating chlorogenic acid (CGA) and CGA functionalized layered clay (LDHs@CGA) was applied to construct polylactic acid (PLA) three-layer active films on fully biodegradable PLA base film. The results indicated that PVA based active coating using dual coating technology (LDHs@CGA/PVA + CGA/PVA) had no visible interface and a uniform thickness, ranging from 4 to 5 μm. When the amount of LDHs@CGA was 1 wt%, the release of CGA in the active intermediate layer (CGA/PVA coating) was limited due to the natural barrier of LDHs@CGA in the controlled release layer (LDHs@CGA/PVA coating), resulting in a decrease in active functions. When the amount of LDHs@CGA reached 3 wt%, the antioxidant (DPPH method), antibacterial (Escherichia coli), and UV absorption (at 335 nm) reached 85.6 %, 87.2 %, and 73.2 %, respectively. This was because in addition to CGA as the main active substance, sufficient amounts of LDHs@CGA can also serve as secondary active substance to supplement the release of CGA. Meanwhile, the addition of LDHs@CGA could significantly improve the gas barrier properties of PVA based active coating, and the barrier to oxygen was much higher than that to water vapor. This study proposes a method of constructing PLA three-layer active films by coating with PVA based active inner coating, which can more effectively and stably exert the active functions for food packaging applications.
期刊介绍:
The aim of this international journal is to analyse and publicise the progress and current state of knowledge in the field of organic coatings and related materials. The Editors and the Editorial Board members will solicit both review and research papers from academic and industrial scientists who are actively engaged in research and development or, in the case of review papers, have extensive experience in the subject to be reviewed. Unsolicited manuscripts will be accepted if they meet the journal''s requirements. The journal publishes papers dealing with such subjects as:
• Chemical, physical and technological properties of organic coatings and related materials
• Problems and methods of preparation, manufacture and application of these materials
• Performance, testing and analysis.