Nowadays, there is an increasing need to develop new green biodegradable materials for active antimicrobial food packaging applications. In this work, polylactic acid-2 % Fluorphlogopite-1.5%silver nanoparticles (AgNPs) composites were prepared using melt extrusion. Films were characterized using Scanning Electron Microscopy, Transmission Electron Microscopy, X-Ray Diffraction, Differential Scanning Calorimetry, and Water Contact Angle measurements. Results showed a good dispersion of both fluorphlogopite and AgNPs in PLA which increased the surface roughness and hydrophobicity of PLA. Subsequently, the thermal, mechanical, and barrier properties of PLA nanocomposites were assessed. PLA-2%Fluorphlogopite-1.5%AgNPs showed a higher thermal stability than neat PLA while the mechanical properties remained unchanged. Furthermore, the excellent barrier properties of PLA were also unaffected by the introduction of fluorphlogopite and AgNPs. Finally, the antibacterial activity of the nanocomposites was assessed against three bacteria, S. aureus, E. faecalis, and E. coli and PLA-2%Fluorphlogopite-1.5%AgNPs inhibited almost completely the bacterial adhesion on the surface of the films.

如今，越来越需要开发用于活性抗菌食品包装应用的新型绿色可生物降解材料。在这项工作中，使用熔融挤出制备了聚乳酸-2% Fluorphlogopite-1.5% 银纳米粒子 (AgNPs) 复合材料。使用扫描电子显微镜、透射电子显微镜、X 射线衍射、差示扫描量热法和水接触角测量对薄膜进行表征。结果表明，PLA中的氟金云母和AgNPs均具有良好的分散性，这增加了PLA的表面粗糙度和疏水性。随后，评估了 PLA 纳米复合材料的热、机械和阻隔性能。PLA-2%Fluorphlogopite-1.5%AgNPs 表现出比纯 PLA 更高的热稳定性，而机械性能保持不变。此外，PLA优异的阻隔性能也不受氟金云母和AgNPs的影响。最后，评估了纳米复合材料对三种细菌的抗菌活性，金黄色葡萄球菌、粪肠球菌、大肠杆菌和PLA-2%Fluorphlogopite-1.5%AgNPs几乎完全抑制了薄膜表面的细菌粘附。