Mania Szymon, Cieślik Mateusz, Konzorski Marcin, Święcikowski Paweł, Nelson Andrzej, Banach Adrianna, Tylingo Robert
Department of Chemistry, Technology, and Biotechnology of Food, Chemical Faculty, Gdansk University of Technology, 11/12 G. Narutowicza Str., 80-233 Gdansk, Poland.
Department of Electrochemistry, Corrosion and Material Engineering, Chemical Faculty, Gdansk University of Technology, 11/12 G. Narutowicza Str., 80-233 Gdansk, Poland.
Polymers (Basel). 2020 May 25;12(5):1198. doi: 10.3390/polym12051198.
Zinc compounds in polyolefin films regulate the transmission of UV-VIS radiation, affect mechanical properties and antimicrobial activity. According to hypothesis, the use of zinc- containing masterbatches in polyethylene films (PE) with different chemical nature-hydrophilic zinc oxide (ZO) and hydrophobic zinc stearate (ZS)-can cause a synergistic effect, especially due to their antimicrobial properties. PE films obtained on an industrial scale containing zinc oxide and zinc stearate masterbatches were evaluated for antimicrobial activity against and strains. The morphology of the samples (SEM), composition (EDX), UV barrier and transparency, mechanical properties and global migration level were also determined. SEM micrographs confirmed the good dispersion of zinc additives in the PE matrix. The use of both masterbatches in one material caused a synergistic effect of antimicrobial activity against both bacterial strains. The ZO masterbatch reduced the transparency of films, increased their UV-barrier ability and improved tensile strength, while the ZS masterbatch did not significantly change the tested parameters. The global migration limit was not exceeded for any of the samples. The use of ZO and ZS masterbatch mixtures enables the design of packaging with high microbiological protection with a controlled transmission for UV and VIS radiation.
聚烯烃薄膜中的锌化合物可调节紫外 - 可见辐射的传输，影响机械性能和抗菌活性。根据假设，在具有不同化学性质的聚乙烯薄膜（PE）中使用含锌母粒——亲水性氧化锌（ZO）和疏水性硬脂酸锌（ZS）——可能会产生协同效应，尤其是因其抗菌性能。对工业规模生产的含有氧化锌和硬脂酸锌母粒的PE薄膜进行了针对[具体菌株未给出]菌株的抗菌活性评估。还测定了样品的形态（扫描电子显微镜）、成分（能谱分析）、紫外线阻隔和透明度、机械性能以及总体迁移水平。扫描电子显微镜照片证实了锌添加剂在PE基体中的良好分散。在一种材料中同时使用两种母粒对两种细菌菌株的抗菌活性产生了协同效应。ZO母粒降低了薄膜的透明度，提高了其紫外线阻隔能力并改善了拉伸强度，而ZS母粒对所测试的参数没有显著影响。任何样品均未超过总体迁移限度。使用ZO和ZS母粒混合物能够设计出具有高微生物防护性能且对紫外线和可见光辐射传输可控的包装。
