{"title":"紫外线照射对含亚油酸和氯化亚铁鱼明胶基薄膜性能和特性的影响。","authors":"Wipawee Theerawitayaart, Kullaya Poomithorn, Krisana Nilsuwan, Ponsatit Sookchoo, Soottawat Benjakul, Thummanoon Prodpran","doi":"10.3390/polym17182512","DOIUrl":null,"url":null,"abstract":"<p><p>This study investigated the combined effects of linoleic acid (LA) incorporation and UV irradiation in the presence and absence of ferrous chloride (FeCl<sub>2</sub>) on the properties and characteristics of fish skin gelatin films. UV irradiation was implemented at different intensities (10,000-40,000 lux) and with different exposure times (1 and 5 min) by two different methods: irradiating the film-forming solution before casting (S-UV) versus irradiating the pre-cast film (F-UV). The UV treatment significantly increased the elastic modulus (EM) while decreasing the tensile strength (TS), elongation at break (EAB), and water-vapor permeability (WVP) of the films (<i>p</i> < 0.05), irrespective of the irradiation method used. This effect became more pronounced with higher UV intensity and longer exposure times. When both LA and FeCl<sub>2</sub> were present, UV irradiation promoted the formation of non-disulfide covalent bonds, leading to increased cross-linking. This cross-linking improved the film's strength and decreased its WVP, although it did cause the films to become yellowish. Fourier-transform infrared spectroscopy (FTIR) confirmed interactions between the gelatin and LA, indicated by a decrease in the intensity of Amide-A, Amide-I, and Amide-II bands. A key finding suggested that UV irradiation, combined with LA/FeCl<sub>2</sub> incorporation, could significantly enhance the properties of fish skin gelatin films, especially their water-vapor barrier. The study's novelty lies in demonstrating that applying the UV treatment to either the film solution or the final film yields similar results, providing flexibility in the manufacturing process.</p>","PeriodicalId":20416,"journal":{"name":"Polymers","volume":"17 18","pages":""},"PeriodicalIF":4.9000,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12473911/pdf/","citationCount":"0","resultStr":"{\"title\":\"Effect of UV Irradiation on Properties and Characteristics of Fish Gelatin-Based Film Containing Linoleic Acid and Ferrous Chloride.\",\"authors\":\"Wipawee Theerawitayaart, Kullaya Poomithorn, Krisana Nilsuwan, Ponsatit Sookchoo, Soottawat Benjakul, Thummanoon Prodpran\",\"doi\":\"10.3390/polym17182512\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>This study investigated the combined effects of linoleic acid (LA) incorporation and UV irradiation in the presence and absence of ferrous chloride (FeCl<sub>2</sub>) on the properties and characteristics of fish skin gelatin films. UV irradiation was implemented at different intensities (10,000-40,000 lux) and with different exposure times (1 and 5 min) by two different methods: irradiating the film-forming solution before casting (S-UV) versus irradiating the pre-cast film (F-UV). The UV treatment significantly increased the elastic modulus (EM) while decreasing the tensile strength (TS), elongation at break (EAB), and water-vapor permeability (WVP) of the films (<i>p</i> < 0.05), irrespective of the irradiation method used. This effect became more pronounced with higher UV intensity and longer exposure times. When both LA and FeCl<sub>2</sub> were present, UV irradiation promoted the formation of non-disulfide covalent bonds, leading to increased cross-linking. This cross-linking improved the film's strength and decreased its WVP, although it did cause the films to become yellowish. Fourier-transform infrared spectroscopy (FTIR) confirmed interactions between the gelatin and LA, indicated by a decrease in the intensity of Amide-A, Amide-I, and Amide-II bands. A key finding suggested that UV irradiation, combined with LA/FeCl<sub>2</sub> incorporation, could significantly enhance the properties of fish skin gelatin films, especially their water-vapor barrier. The study's novelty lies in demonstrating that applying the UV treatment to either the film solution or the final film yields similar results, providing flexibility in the manufacturing process.</p>\",\"PeriodicalId\":20416,\"journal\":{\"name\":\"Polymers\",\"volume\":\"17 18\",\"pages\":\"\"},\"PeriodicalIF\":4.9000,\"publicationDate\":\"2025-09-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12473911/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Polymers\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.3390/polym17182512\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"POLYMER SCIENCE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polymers","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.3390/polym17182512","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
Effect of UV Irradiation on Properties and Characteristics of Fish Gelatin-Based Film Containing Linoleic Acid and Ferrous Chloride.
This study investigated the combined effects of linoleic acid (LA) incorporation and UV irradiation in the presence and absence of ferrous chloride (FeCl2) on the properties and characteristics of fish skin gelatin films. UV irradiation was implemented at different intensities (10,000-40,000 lux) and with different exposure times (1 and 5 min) by two different methods: irradiating the film-forming solution before casting (S-UV) versus irradiating the pre-cast film (F-UV). The UV treatment significantly increased the elastic modulus (EM) while decreasing the tensile strength (TS), elongation at break (EAB), and water-vapor permeability (WVP) of the films (p < 0.05), irrespective of the irradiation method used. This effect became more pronounced with higher UV intensity and longer exposure times. When both LA and FeCl2 were present, UV irradiation promoted the formation of non-disulfide covalent bonds, leading to increased cross-linking. This cross-linking improved the film's strength and decreased its WVP, although it did cause the films to become yellowish. Fourier-transform infrared spectroscopy (FTIR) confirmed interactions between the gelatin and LA, indicated by a decrease in the intensity of Amide-A, Amide-I, and Amide-II bands. A key finding suggested that UV irradiation, combined with LA/FeCl2 incorporation, could significantly enhance the properties of fish skin gelatin films, especially their water-vapor barrier. The study's novelty lies in demonstrating that applying the UV treatment to either the film solution or the final film yields similar results, providing flexibility in the manufacturing process.
期刊介绍：
Polymers (ISSN 2073-4360) is an international, open access journal of polymer science. It publishes research papers, short communications and review papers. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Polymers provides an interdisciplinary forum for publishing papers which advance the fields of (i) polymerization methods, (ii) theory, simulation, and modeling, (iii) understanding of new physical phenomena, (iv) advances in characterization techniques, and (v) harnessing of self-assembly and biological strategies for producing complex multifunctional structures.
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