Aboelmagd Lamis Ahmed, Tolba Emad, AbdelAziz Zeinab Ahmed
Home Economics Department, Faculty of Specific Education, Mansoura University, Mansoura, Egypt.
Polymers and Pigments Department, National Research Centre, 33 El Bohouth St., Dokki, P.O. BOX 12622, Giza, Egypt.
Polym Bull (Berl). 2023;80(4):4229-4243. doi: 10.1007/s00289-022-04250-x. Epub 2022 May 17.
Functional cotton fabrics using silver-based nanoparticles (AgNPs) have attracted a lot of attention as a new generation of healthcare wearable textile. In this study, cotton fabrics were coated via impregnation with silver nanoparticles using chitosan (Cs) and (or) chitosan-organosilica (Cs-OSH) solutions as adhesives matrices. The physicochemical properties were studied using UV-VIS spectroscopy, and transmission electron microscopy (TEM) and scanning electron microscope coupled with energy-dispersive X-ray spectroscopy methods (SEM-EDX). The antibacterial activity of the silver-treated fabrics was determined using agar diffusion method. However, nanosize spherical AgNPs were observed in Cs and Cs-OSH solution. The average particle diameter was around 10 nm for Cs/AgNPs sample and close 21 nm for Cs-OSH/AgNPs. Microscopy images showed the deposition of Ag NPs on the surface of cotton fibers. The results indicated that the cotton fibers treated with Cs-OSH/AgNPs solution showed good stability against washing and maintained higher antimicrobial activity even after being exposed to 10 consecutive home laundering conditions. Thus, this work suggests the use of chitosan-organosilicon matrix to improve the bonding between AgNPs and cotton fibers for better and long-term antimicrobial activity.
使用银基纳米颗粒（AgNPs）的功能性棉织物作为新一代医疗保健可穿戴纺织品受到了广泛关注。在本研究中，以壳聚糖（Cs）和（或）壳聚糖 - 有机硅（Cs - OSH）溶液作为粘合剂基质，通过浸渍法用银纳米颗粒对棉织物进行涂层处理。使用紫外 - 可见光谱、透射电子显微镜（TEM）以及扫描电子显微镜与能量色散X射线光谱联用方法（SEM - EDX）研究其物理化学性质。采用琼脂扩散法测定经银处理织物的抗菌活性。然而，在Cs和Cs - OSH溶液中观察到纳米尺寸的球形AgNPs。Cs/AgNPs样品的平均粒径约为10nm，Cs - OSH/AgNPs的平均粒径接近21nm。显微镜图像显示Ag NPs沉积在棉纤维表面。结果表明，用Cs - OSH/AgNPs溶液处理的棉纤维在洗涤后具有良好的稳定性，即使在连续10次家庭洗涤条件下暴露后仍保持较高的抗菌活性。因此，这项工作表明使用壳聚糖 - 有机硅基质来改善AgNPs与棉纤维之间的结合，以获得更好的长期抗菌活性。
