Institute of Clinical Physiology, National Research Council, Massa, Italy.
Department of Applied Science and Technology, Politecnico di Torino, Turin, Italy.
J Appl Biomater Funct Mater. 2024 Jan-Dec;22:22808000241277383. doi: 10.1177/22808000241277383.
In the past few years, due to the Covid-19 pandemic, the interest towards textiles with antimicrobial functionalities faced a significant boost. This study proposes a rapid and convenient method, in terms of reactants and equipment, for fabricating antimicrobial coatings on textiles. Through the electroless silver plating reaction, silver coatings were successfully applied on cotton and polyester, rapidly and at room temperature. Functionalized samples were characterized by morphological (optical and scanning electron microscopies) and chemical tests (X-ray photoelectron spectroscopy, XPS) to investigate the nature of the silver coating. Although distinct nanoparticles did not form, XPS analysis detected the presence of silver, which resulted in an increased surface roughness and hydrophobicity of both cotton and polyester textiles. Ag-coated samples exhibited approximately 80% biocompatibility with murine L929 fibroblasts or human HaCaT cells, and strong antibacterial properties against in direct contact tests. In antiviral experiments with SARS-CoV-2 virus, treated cotton showed a 100% viral reduction in 30 min, while polyester achieved 100% reduction in 1 h. With a human norovirus surrogate, the Feline Calicivirus, both treated textiles have a faster antiviral response, with more than 60% viral reduction after 5 min, while achieving a 100% reduction in 1 h. In conclusion, this study presents a fast, efficient, and low-cost solution for producing antimicrobial textiles with broad applications in medical and healthcare scenarios.
在过去的几年中，由于 COVID-19 大流行，对具有抗菌功能的纺织品的兴趣大幅增加。本研究提出了一种快速简便的方法，在反应物和设备方面，用于在纺织品上制造抗菌涂层。通过化学镀银反应，成功地在棉和聚酯上快速且在室温下应用了银涂层。通过形态学（光学和扫描电子显微镜）和化学测试（X 射线光电子能谱，XPS）对功能化样品进行了表征，以研究银涂层的性质。尽管没有形成明显的纳米颗粒，但 XPS 分析检测到了银的存在，这导致棉和聚酯纺织品的表面粗糙度和疏水性增加。Ag 涂层样品对鼠 L929 成纤维细胞或人 HaCaT 细胞的生物相容性约为 80％，并且在直接接触测试中对具有很强的抗菌性能。在 SARS-CoV-2 病毒的抗病毒实验中，处理过的棉在 30 分钟内显示出 100％的病毒减少，而聚酯在 1 小时内达到 100％的减少。用人类诺如病毒替代物，猫杯状病毒，两种处理过的纺织品都具有更快的抗病毒反应，在 5 分钟后病毒减少了 60％以上，而在 1 小时内达到 100％的减少。总之，本研究提出了一种快速，高效且低成本的方法，用于生产具有广泛应用于医疗和保健领域的抗菌纺织品。
