Abstract Antibacterial materials have found widespread interest in different fields nowadays. In this study, curcumin (Cur) was incorporated into the polyvinyl butyral (PVB) matrix by dissolving in ethanol for improving the functional properties of a pure PVB film. We found that Cur was uniformly dispersed in the PVB matrix, which showed good compatibility. Moreover, the incorporation of Cur could also improve thermal stability, hydrophilicity, and mechanical property. The UV-vis spectra of the PVB–Cur film demonstrated that the film could block ultraviolet radiation. Subsequently, the antibacterial activity of the PVB–Cur film was measured by the colony-counting method against S. aureus and E. coli. The results showed that the PVB–Cur film exhibited good antibacterial activity. Therefore, the PVB–Cur film was considered as a promising material for food and medical packaging applications.

中文翻译：

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具有抗菌活性的负载姜黄素的聚乙烯醇缩丁醛薄膜

摘要 目前，抗菌材料在不同领域受到广泛关注。在这项研究中，姜黄素 (Cur) 通过溶于乙醇而被掺入到聚乙烯醇缩丁醛 (PVB) 基质中，以改善纯 PVB 薄膜的功能特性。我们发现Cur均匀地分散在PVB基体中，表现出良好的相容性。此外，Cur 的掺入还可以提高热稳定性、亲水性和机械性能。PVB-Cur 薄膜的紫外-可见光谱表明该薄膜可以阻挡紫外线辐射。随后，PVB-Cur 薄膜的抗菌活性通过菌落计数法对金黄色葡萄球菌和大肠杆菌进行测量。结果表明，PVB-Cur薄膜表现出良好的抗菌活性。所以，