There is a continuous search for green and sustainable materials and processes in textile dyeing and finishing. In the current study, wool yarns were grafted with Sodium Alginate-Silver nanoparticles (SA-Ag NPs) and consecutively dyed with Cochineal or Madder. The weight gain of the samples was measured to find the optimized SA-Ag NPs initial concentration, and Scanning Electron Microscopy (SEM) was used to study their surface morphology. The effects of the initial dye concentration, pH, temperature on the color strength of the dyed samples were investigated. It was found that the pretreatment enhanced the dye-ability, antimicrobial, and antioxidant characteristics of the samples noticeably. Under the same dyeing conditions, the fixation of dyes on the treated wool fibers was noticeably higher than that of the untreated wool fibers. The colorfastness characteristics of the treated samples dyed with Cochineal or Madder were slightly improved. The results clearly showed that the application of SA-Ag NPs on the wool samples could be considered as a green finishing process with promising antioxidant and antimicrobial activities. A very high level of antimicrobial efficiency (99%) was achieved after the pretreatment, which remained as high as 90% even after ten repeated washing cycles.

在纺织品染色和后整理中一直在寻找绿色和可持续的材料和工艺。在当前的研究中，羊毛纱接枝了海藻酸钠-银纳米颗粒（SA-Ag NPs），并连续用胭脂红或马德染色。测量样品的增重以找到最佳的SA-Ag NPs初始浓度，然后使用扫描电子显微镜（SEM）研究其表面形态。研究了初始染料浓度，pH，温度对染色样品色强度的影响。发现该预处理显着提高了样品的染色性，抗微生物性和抗氧化性。在相同的染色条件下，在处理过的羊毛纤维上的固色率明显高于未处理的羊毛纤维。用胭脂红或马德染色的处理样品的色牢度特性略有改善。结果清楚地表明，在羊毛样品上使用SA-Ag NP可以被认为是绿色的整理过程，具有良好的抗氧化和抗菌活性。预处理后，抗菌水平非常高（99％），即使经过十次重复的洗涤循环，抗菌效率仍高达90％。