Wu Yixiao, Fu Chenlin, Xing Jiaxin, Yang Lin, Zhao Chong, Yan Kun
School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China.
Key Laboratory of Textile Fiber & Product, Ministry of Education, Wuhan Textile University, Wuhan 430200, China.
Polymers (Basel). 2024 Nov 22;16(23):3244. doi: 10.3390/polym16233244.
Herein, this study reports the development of a multifunctional conductive antibacterial cotton fabric through the utilization of the natural polyphenol-mediated silver mirror reaction. The experimental results demonstrate that polyphenols can effectively facilitate the deposition of silver nanoparticles (AgNPs), resulting in a uniform and durable hybrid nanocoating on the cotton fabric. The effects of polyphenol's molecular weights on the coating structures and stabilities have been revealed via two distinct approaches: washing resistance and electrochemical testing systems. It has been concluded that lower-molecular-weight phenols induce a compact and dense coating structure, whereas polyphenols such as tannic acid exhibit relatively high stability, achieving an excellent conductivity of 0.2 S/cm and a good washing resistance of 67% over five cycles. The underlying mechanism has been further confirmed by the cyclic voltammetry measurements, suggesting that polyphenols play a significant role in stabilizing AgNPs and preventing their dissolution. Furthermore, the Ag-doped polyphenol-coated fabrics exhibit notable antibacterial properties. By coupling natural polyphenols with typical silver mirror reactions, this study not only offers a sustainable alternative to synthetic chemicals but also presents a promising method to endow cotton textiles with the dual properties of conductivity and antibacterial activity.
在此，本研究报告了一种通过利用天然多酚介导的银镜反应开发多功能导电抗菌棉织物的方法。实验结果表明，多酚能够有效促进银纳米颗粒（AgNPs）的沉积，从而在棉织物上形成均匀且耐用的混合纳米涂层。通过两种不同的方法揭示了多酚分子量对涂层结构和稳定性的影响：耐洗性和电化学测试系统。得出的结论是，低分子量酚类会诱导形成致密的涂层结构，而诸如单宁酸之类的多酚则表现出相对较高的稳定性，实现了0.2 S/cm的优异电导率以及在五个循环中67%的良好耐洗性。循环伏安法测量进一步证实了其潜在机制，表明多酚在稳定AgNPs并防止其溶解方面发挥着重要作用。此外，掺银多酚涂层织物具有显著的抗菌性能。通过将天然多酚与典型的银镜反应相结合，本研究不仅为合成化学品提供了一种可持续的替代品，还提出了一种赋予棉纺织品导电性和抗菌活性双重特性的有前景的方法。
