Mačák Lívia, Velgosova Oksana, Múdra Erika, Vojtko Marek, Dolinská Silvia, Kromka František
Institute of Materials and Quality Engineering, Faculty of Materials Metallurgy and Recycling, Technical University of Kosice, Letná 9/A, 042 00 Košice, Slovakia.
Division of Ceramic and Non-Metallic Systems, Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia.
Polymers (Basel). 2024 Jun 29;16(13):1865. doi: 10.3390/polym16131865.
This article focuses on the eco-friendly (green) synthesis of silver nanoparticles (AgNPs) and their incorporation into a polymer matrix. For AgNPs synthesis, Lavandula angustifolia (lavender) leaf extract was used as a reducing and stabilizing agent, and as a silver precursor, AgNO solution with different concentrations of silver (50, 100, 250, and 500 mg/L) was used. Prepared AgNPs colloids were characterized using UV-vis spectrophotometry, transmission electron microscopy (TEM), and X-ray diffraction (XRD). The spherical morphology of AgNPs with an average size of 20 nm was confirmed across all samples. Further, the antimicrobial properties of the AgNPs were evaluated using the disk diffusion method on algae () and the well diffusion method on bacteria (, , and ), along with root growth inhibition tests on white mustard (). Polymer composite (PVA-AgNPs) was prepared by incorporation of AgNPs into the polymer matrix. Subsequently, non-woven textiles and thin foils were prepared. The distribution of AgNPs within the nanocomposites was observed by scanning electron microscopy (SEM). Antibacterial properties of PVA-AgNPs composites were analyzed on bacteria . It was found that not only AgNPs showed good antimicrobial properties, but toxic properties were also transferred to the PVA-AgNPs nanocomposite.
本文重点关注银纳米颗粒（AgNPs）的环保（绿色）合成及其在聚合物基质中的掺入。对于AgNPs的合成，使用薰衣草叶提取物作为还原剂和稳定剂，并使用具有不同银浓度（50、100、250和500mg/L）的AgNO溶液作为银前驱体。使用紫外可见分光光度法、透射电子显微镜（TEM）和X射线衍射（XRD）对制备的AgNPs胶体进行表征。在所有样品中均证实了平均尺寸为20nm的AgNPs的球形形态。此外，使用纸片扩散法对藻类（）进行AgNPs的抗菌性能评估，并使用打孔扩散法对细菌（、和）进行评估，同时对白芥（）进行根生长抑制试验。通过将AgNPs掺入聚合物基质中来制备聚合物复合材料（PVA-AgNPs）。随后，制备了无纺布和薄箔。通过扫描电子显微镜（SEM）观察AgNPs在纳米复合材料中的分布。对细菌分析了PVA-AgNPs复合材料的抗菌性能。发现不仅AgNPs表现出良好的抗菌性能，而且毒性也转移到了PVA-AgNPs纳米复合材料中。
