Environmentally friendly Finishing of Cotton Fabric via Star-like Silver micro/nano Particles Synthesized with Neem/Salep

ABSTRACT

In this study, a novel silver solution was prepared by a simple green synthesis method using AgNO₃, neem and salep extracts at room temperature. The results of UV-Visible spectrophotometer and Scanning Electron Microscopy (SEM) showed the formation of silver particles with a star-like morphology and sharp edges in the solution. In order to achieve an antibacterial cotton fabric, it was treated with the solution containing star-shaped silver particles by an impregnation method. Also, in order to change the surface charge of cotton fabric and more silver adsorption, a cationic surface modification was performed. Surface morphology and antibacterial properties of treated cotton fabric were characterized by SEM, inductively coupled plasma-optical emission spectrometer (ICP-OES), and antibacterial test based on the AATCC100 method, respectively. SEM images showed the presence of silver particles on the surface of treated fabric samples and ICP-OES determined the amount of silver content on the fabrics. In addition, the bacterial inhibition experiments demonstrated that the treated cotton fabrics with the star-like Ag particles synthesized by neem and salep have significant antibacterial properties against gram-positive and gram-negative bacteria. The utilized method was an easy, nontoxic, and environmentally friendly procedure for the preparation of antibacterial textiles with attractive feature in the medical and hygienic products.

摘要

以AgNo3、neem和salep为原料，采用简单的绿色合成方法，在室温下制备了一种新型的银溶液. 紫外可见分光光度计和扫描电子显微镜（SEM）结果表明，银微/纳米颗粒具有星形形貌和锐利边缘. 为了得到抗菌织物，采用浸渍法制备了星形银溶液. 同时，为了改变棉花的表面电荷，增加银的吸附量，提高银的沉积稳定性，进行了阳离子表面改性. 采用扫描电镜（SEM）、电感耦合等离子体发射光谱仪（ICP-OES）和标准抗菌测试方法对整理后织物的表面形貌和抗菌性能进行了表征. 扫描电镜（SEM）显示样品表面有银颗粒，ICP-OES测定了洗涤前后织物上银的含量. 此外，抑菌实验表明，由neem和salep合成的星形银粒子处理后的织物对革兰氏阳性菌和革兰氏阴性菌具有显著的抗菌性能. 该方法是一种简单、无毒、环保的抗菌纺织品制备方法，在医疗卫生产品中具有诱人的特点.

KEYWORDS:

• Green synthesis
• salep
• neem
• star-like silver
• cotton fabric
• antibacterial properties

关键词:

• 绿色合成
• 星星般的银色
• 棉布
• 抗菌性能