Preparation of antibacterial nanocomposite cotton fabrics with in situ generated silver and silver oxide nanoparticles by bioreduction using Moringa oliefiera leaf extract

Document Type: Original Research Paper

Author

Professor of chemistry RGM COLLEGE OF ENGINEERING & TECHNOLOGY, NH-40

10.22034/jna.2020.1895962.1198

Abstract

Aqueous Moringa Oliefiera (MO) leaves extraction is employed as a reductant to generate silver nanoparticles (AgNPs) and silver oxide nanoparticles (Ag2ONPs) in cellulose fabrics by in situ technique. The biosynthesized nanocomposite cotton fabrics (NCFs) were analysed by X-ray Diffraction (XRD), Differential Scanning Calorimetry (DSC), Scanning Electron Microscopy (SEM) associated Energy Dispersive X-ray (EDX) spectroscopy, Fourier Transform Infrared (FTIR) and Thermogravimetric analysis (TGA) methods. The shape and mean size of AgNPs in NCFs were found to be globular and 82 nm, respectively and their formation in NCFs was established by SEM studies. EDX analysis established the presence of silver metal. The XRD analysis revealed that the obtained silver based nanoparticles were crystalline in nature. The TG and DTG analysis showed that the obtained NCFs were thermally stable. These NCFs exhibited good antibacterial activity against Gram negative (G-ve) Pseudomonas aeruginosa (P. aeruginosa) and Gram positive (G+ve) Staphylococcus aureus (S.aureus) bacteria. The mechanical properties such as modulus, tensile strain and stress of NCFs were also tested, utilizing universal testing machine (UTM). The modulus was found to be 276.4 MPa. These NCFs can be used in medicine for making antibacterial napkins, wound dressing bandage cloth, etc., and as packaging materials.

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