El-Naggar Mehrez E, Shaarawy Sahar, Abdel-Aziz Mohamed S, Abd El Moneim Katry Hazem, Youssef Ahmed M
Textile Research Division, Pre-Treatment and Finishing of Cellulosic Fibers Department, National Research Center, Cairo, Egypt.
Genetic Engineering and Biotechnology Division, National Research Center, Cairo, Egypt.
Luminescence. 2022 May;37(5):854-864. doi: 10.1002/bio.4229. Epub 2022 Mar 29.
The target of our current work was designed to prepare titanium oxide doped silver nanoparticles (Ag/TiO NPs) and their impact on the functionalization of cotton fabrics. Additionally, the effect of Ag/TiO NPs was compared with the individually prepared silver nanoparticles (AgNPs) and titanium oxide nanoparticles (TiO NPs). In this work, AgNPs were prepared in the solid state using arabic gum as efficient stabilizing and reducing agent. Then, two concentrations of the as-synthesized nanoparticles were used to functionalize the cotton fabrics by pad-dry-cure treatment in the presence of fixing agent to increase the durability of treated cotton fabrics against vigorous washing cycles. The findings implied that the as-prepared nanoparticles were successfully synthesized in nano-size with spherical shape and homogeneity. The efficacy of the functionalized cotton fabrics with those nanoparticles were evaluated in terms of multifunctional properties including antimicrobial and ultraviolet protection factor (UPF) and the mechanical features before and after many washing cycles; 10, 15 and 20 times. The resultant also proved that Ag/TiO NPs-treated cotton fabrics exhibited the greater values of both antimicrobial and UPF properties with enhancement in the tensile strength and elongation features. Thus, the combination between these two nanoparticles through doping reaction is suitable for imparting superior antimicrobial properties against the four tested microbial species (Staphylococcus aureus, Escherichia coli, Candida albicans, and Aspergillus niger) and good UPF properties. Depending on the promising obtained results of the multi-finishing fabrics, these nanoparticles of Ag/TiO NPs can be applied for the production of an efficient medical clothes for doctors, nurses and bed sheets for patients in order to kill and prevent the spread of bacteria and then, reduce the transmission of infection to others.
我们当前工作的目标是制备氧化钛掺杂银纳米颗粒（Ag/TiO NPs）及其对棉织物功能化的影响。此外，还将Ag/TiO NPs的效果与单独制备的银纳米颗粒（AgNPs）和氧化钛纳米颗粒（TiO NPs）进行了比较。在这项工作中，以阿拉伯胶作为高效的稳定剂和还原剂，通过固态法制备了AgNPs。然后，使用两种浓度的合成纳米颗粒，在固着剂存在的情况下，通过轧染-烘干-焙烘处理对棉织物进行功能化处理，以提高处理后的棉织物在剧烈洗涤循环中的耐久性。研究结果表明，所制备的纳米颗粒成功地合成出了纳米尺寸、球形且均匀的颗粒。对用这些纳米颗粒功能化的棉织物的功效进行了多方面性能评估，包括抗菌性能、紫外线防护系数（UPF）以及在多次洗涤循环（10次、15次和20次）前后的机械性能。结果还证明，经Ag/TiO NPs处理的棉织物在抗菌和UPF性能方面表现出更高的值，同时拉伸强度和伸长性能也有所增强。因此，通过掺杂反应将这两种纳米颗粒结合起来，适用于赋予对四种测试微生物物种（金黄色葡萄球菌、大肠杆菌、白色念珠菌和黑曲霉）优异的抗菌性能以及良好的UPF性能。基于多功能整理织物所获得的有前景的结果，这些Ag/TiO NPs纳米颗粒可应用于生产高效的医用服装，供医生、护士穿着以及为患者提供床单，以杀灭和防止细菌传播，进而减少感染向他人的传播。
