Electroless silver plating on fabrics for antimicrobial coating: comparison between cotton and polyester.

IF 3.1 4区 医学 Q2 BIOPHYSICS
Ivan Vito Ferrari, Micaela Castellino, Anissa Pisani, Giulia Giuntoli, Aida Cavallo, Tamer Al Kayal, Paola Mazzetti, Alfredo Rosellini, Maria Sidoti, Antonino Cataldo, Mauro Pistello, Giorgio Soldani, Paola Losi
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Abstract

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 Escherichia coli 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.

织物上的非电解镀银抗菌涂层:棉与涤纶的比较。
在过去几年中,由于 Covid-19 的流行,人们对具有抗菌功能的纺织品的兴趣大增。本研究从反应物和设备方面提出了一种快速、便捷的纺织品抗菌涂层制备方法。通过无电解镀银反应,成功地在室温下快速在棉和聚酯纤维上镀上了银涂层。通过形态学(光学显微镜和扫描电子显微镜)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。虽然没有形成明显的纳米颗粒,但 XPS 分析检测到了银的存在,从而增加了棉和聚酯纺织品的表面粗糙度和疏水性。银涂层样品与小鼠 L929 成纤维细胞或人类 HaCaT 细胞的生物相容性约为 80%,在直接接触测试中对大肠杆菌具有很强的抗菌性。在用 SARS-CoV-2 病毒进行的抗病毒实验中,经过处理的棉布在 30 分钟内可减少 100%的病毒,而经过处理的聚酯纤维在 1 小时内可减少 100%的病毒。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Applied Biomaterials & Functional Materials
Journal of Applied Biomaterials & Functional Materials BIOPHYSICS-ENGINEERING, BIOMEDICAL
CiteScore
4.40
自引率
4.00%
发文量
36
审稿时长
>12 weeks
期刊介绍: The Journal of Applied Biomaterials & Functional Materials (JABFM) is an open access, peer-reviewed, international journal considering the publication of original contributions, reviews and editorials dealing with clinical and laboratory investigations in the fast growing field of biomaterial sciences and functional materials. The areas covered by the journal will include: • Biomaterials / Materials for biomedical applications • Functional materials • Hybrid and composite materials • Soft materials • Hydrogels • Nanomaterials • Gene delivery • Nonodevices • Metamaterials • Active coatings • Surface functionalization • Tissue engineering • Cell delivery/cell encapsulation systems • 3D printing materials • Material characterization • Biomechanics
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