通过电子束辐照交联改进包装用聚乳酸-PVA/壳聚糖纳米复合层压膜：机械、热和抗菌分析

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Journal of Plastic Film & Sheeting Pub Date : 2024-02-16 DOI:10.1177/87560879241233704

Thawanrat Chaisit, Punnanee Sumpavapol, Thitirat Rattanawongwiboon, Kittisak Jantanasakulwong, Thorsak Kittikorn

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引用次数: 0

摘要

本研究调查并开发了一种聚乳酸（PLA）和聚乙烯醇（PVA）复合包装膜，其中含有经 3-(三甲氧基硅烷基)丙基甲基丙烯酸酯硅烷（TMSPM）处理的改性壳聚糖纳米颗粒（MCSNPs），TMSPM 既可用作增强剂，也可用作抗菌填料。电子束辐照通过 TMSPM 接枝壳聚糖纳米粒子甲基丙烯酸酯基团中羰基的自由基和聚乙烯醇羟基的自由基，在 PVA 和 MCSNP 分子之间产生交联。这改善了 PVA 的疏水性。此外，PVA-g-MCSNPs 薄膜经 30 kGy 电子束辐照后的层压板性能最佳，这是因为聚乳酸和 PVA-g-MCSNPs 之间的界面粘附性得到了改善。因此，机械性能和热性能也得到了改善。经过 30 kGy 照射的薄膜对大肠杆菌和金黄色葡萄球菌也具有更好的抗菌活性。

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Improvement of PLA-PVA/chitosan nanocomposite laminate film for packaging via crosslinking with electron beam irradiation: Mechanical, thermal and antimicrobial analysis

This research investigated and developed a laminate packaging film of poly(lactic acid) (PLA) and poly(vinyl alcohol) (PVA) containing modified chitosan nanoparticles (MCSNPs) treated with 3-(trimethoxysilyl)propyl methacrylate silane (TMSPM) which functioned both as a reinforcement and as an antimicrobial filler. Electron beam irradiation caused crosslink between the PVA and MCSNP molecules via the free radical of carbonyl in the methacrylate group of TMSPM-grafted chitosan nanoparticles and the free radical of hydroxyl group in poly(vinyl alcohol). This improved the PVA hydrophobicity. In addition, the laminate with PVA-g-MCSNPs film irradiated with a 30 kGy electron beam showed the best performance properties due to improved interfacial adhesion between PLA and PVA-g-MCSNPs. As a consequence, the mechanical and thermal properties improved. The 30 kGy irradiated film also had better antibacterial activity against both Escherichia coli and Staphylococcus aureus.

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来源期刊

Journal of Plastic Film & Sheeting 工程技术-材料科学：膜

CiteScore

6.00

自引率

16.10%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Plastic Film and Sheeting improves communication concerning plastic film and sheeting with major emphasis on the propogation of knowledge which will serve to advance the science and technology of these products and thus better serve industry and the ultimate consumer. The journal reports on the wide variety of advances that are rapidly taking place in the technology of plastic film and sheeting. This journal is a member of the Committee on Publication Ethics (COPE).