Abstract

Antibacterial silver nanocomposite cotton fabrics were generated by in situ method using Senna auriculata (SA) leaf broth as reductant. Silver nanoparticles (AgNPs) synthesized on cotton fabrics (nanocomposite cellulose fabrics [NCCFs]) were analyzed by different spectral characteristics like FTIR, SEM correlated with EDX and XRD. The SEM analysis revealed that the generated AgNPs on NCCFs were spherical in shape with a mean size of 100 nm. The XRD studies showed that the biosynthesized NCCFs are exhibiting FCC crystalline lattice structure. The FTIR spectra indicated that the hydroxyl functional group in leaf extract is responsible for bioreduction of silver ions into metallic silver. The TG-DTG and DSC analysis showed higher thermal stability and the deterioration in stages. The biogenerated AgNPs in NCCFs exhibited good antibacterial activity against Gram-positive and Gram-negative pathogenic bacteria. The NCCFs also exhibited good mechanical strength. The NCCFs with bio generated AgNPs can be considered for medical and packing applications.

摘要

使用番泻叶( SA)原位法制备抗菌银纳米复合棉织物) 叶肉汤作为还原剂。在棉织物（纳米复合纤维素织物 [NCCFs]）上合成的银纳米粒子 (AgNPs) 通过不同的光谱特征进行分析，如 FTIR、与 EDX 和 XRD 相关的 SEM。SEM 分析表明，在 NCCF 上生成的 AgNPs 呈球形，平均尺寸为 100 nm。XRD 研究表明，生物合成的 NCCF 表现出 FCC 晶格结构。FTIR 光谱表明叶提取物中的羟基官能团负责将银离子生物还原为金属银。TG-DTG 和 DSC 分析显示出较高的热稳定性和阶段性劣化。NCCFs 中生物生成的 AgNPs 对革兰氏阳性和革兰氏阴性病原菌表现出良好的抗菌活性。NCCF 还表现出良好的机械强度。