关键词: Antimicrobial activity Coatings durability Colloidal silver Time effectiveness Wood paint

Mesh : Silver / pharmacology Wood Anti-Bacterial Agents / pharmacology Anti-Infective Agents Water Escherichia coli Coated Materials, Biocompatible

来  源:   DOI:10.1007/s00253-023-12710-1   PDF(Pubmed)

Abstract:
This work aims to represent a standard application for understanding the extent of the antibacterial efficacy of coatings with different amounts of colloidal silver on wooden surfaces over time. The key variable that was intended to be evaluated in this study was the \"time efficiency,\" with concerns about the possible efficacy in the durability of the surfaces. By highlighting the \"expiry date\" of the agents, as in the case with other products, the study aimed to confirm the validity of the simulation tests conducted in the laboratory with degradation tests. Furthermore, the role of the silver amount on the barrier performance of the coatings was assessed by liquid resistance, water uptake, and perspiration tests, evaluating the aesthetic durability of the coatings by means of colorimetric analyses. Ultimately, this work demonstrates that these coatings may represent alternatives in terms of prolonged antimicrobial activity when compared with the biocide agents currently in use, capable to offer good resistance to detergent solutions and to water. Nevertheless, due to silver\'s susceptibility to extended exposure to acidic solutions, the findings of the research discourage the utilization of colloidal silver in wood paints intended for use in public settings. KEY POINTS: • Colloidal silver does not alter the deposition process and does not introduce defects in the wood paint. • Coatings containing silver show high antimicrobial activity over time, against both E.coli and S.aureus. • The silver-based filler resists contact with detergents and aqueous solutions but suffers oxidation processes in acidic environments.
摘要:
这项工作旨在代表一个标准的应用,以了解随着时间的推移,在木质表面上使用不同量的胶体银的涂层的抗菌功效程度。本研究中打算评估的关键变量是时间效率,“担心表面耐久性的可能功效。通过突出显示代理人的“到期日”,与其他产品一样,该研究旨在证实在实验室进行的具有降解测试的模拟测试的有效性。此外,银量对涂层的阻隔性能的作用是通过耐液性来评估的,吸水,和出汗测试,通过比色分析评估涂层的美学耐久性。最终,这项工作表明,这些涂料可以代表替代品在延长抗菌活性相比,目前使用的杀菌剂,能够提供良好的耐洗涤剂溶液和水。然而,由于银对酸性溶液长期暴露的敏感性,这项研究的结果阻碍了在公共场合使用的木器漆中使用胶体银。关键点:•胶体银不会改变沉积过程并且不会在木器漆中引入缺陷。•涂层含银显示出高抗菌活性随着时间的推移,对大肠杆菌和S.aureus.•银基填料抵抗与洗涤剂和水溶液的接触,但在酸性环境中经受氧化过程。
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