开发一种用于多功能聚乳酸包装膜的乳酸铈抗菌成核剂。
Developing a cerium lactate antibacterial nucleating agent for multifunctional polylactic acid packaging film.
机构信息
Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China; Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen 361021, China.
Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China.
出版信息
Int J Biol Macromol. 2022 Nov 1;220:56-66. doi: 10.1016/j.ijbiomac.2022.08.082. Epub 2022 Aug 13.
With the rapid development of the packaging industry, people have high requirements for the functionality of packaging materials. As a representative biodegradable packaging material, polylactic acid (PLA) still has some problems. Multifunctional additives in PLA are an effective modification method. In this paper, cerium lactate (Ce-LA) was synthesized by a precipitation method and integrated into PLA to prepare a functional PLA composite. The results showed that Ce-LA not only significantly improved the crystallinity but also imparted antibacterial ability to PLA. When the concentration of Ce-LA was 0.9 %, the crystallinity of PLA reached 39.35 %, which was 77 % higher than that of pure PLA. When the addition of Ce-LA was 1.8 %, the antibacterial rates of PLA against Staphylococcus aureus and Escherichia coli reached 93 % and 85 %, respectively. This study provides a beneficial solution for the development of PLA packaging materials with high crystallinity and antibacterial properties.
随着包装工业的快速发展，人们对包装材料的功能性提出了很高的要求。聚乳酸（PLA）作为一种代表性的可生物降解包装材料，仍然存在一些问题。在 PLA 中添加多功能添加剂是一种有效的改性方法。本文采用沉淀法合成了乳酸铈（Ce-LA），并将其整合到 PLA 中，制备了一种功能性 PLA 复合材料。结果表明，Ce-LA 不仅显著提高了 PLA 的结晶度，而且赋予了 PLA 抗菌能力。当 Ce-LA 的浓度为 0.9%时，PLA 的结晶度达到 39.35%，比纯 PLA 高 77%。当添加 1.8%的 Ce-LA 时，PLA 对金黄色葡萄球菌和大肠杆菌的抑菌率分别达到 93%和 85%。本研究为开发具有高结晶度和抗菌性能的 PLA 包装材料提供了有益的解决方案。
Zotero 插件