In situ green synthesis of antibacterial copper nanocomposite cotton fabrics using Achyranthes aspera leaf extract

Abstract

Nanomaterials are finding the diversity of application at the leading edge in emerging field of nanotechnology. Copper nanoparticles (CuNPs) were in situ generated on the surface of cotton fabrics, using Achyranthes aspera leaf extract by environmentally benign green synthesis. The structural and morphological properties of synthesized nanocomposite cotton fabrics (NCFs) were characterized by different spectral studies such as Fourier-transformation infrared (FTIR), scanning electron microscopy (SEM) coupled with energy-dispersive X-ray primary and derivative thermogravimetric (TG-DTG), differential scanning calorimetry (DSC), and X-ray diffractometer (XRD). The molecular functionalities of hydroxyl groups in polyphenols of A. aspera leaf extract were identified from FTIR absorption spectrum, and they are responsible for the bioreduction of Cu+2 into Cu0 for the formation of CuNPs. The average size of the formed CuNPs from SEM studies was found to be 95 nm. The formed CuNPs were exhibited Face centered cubic (FCC) crystalline structure, and it was confirmed by XRD studies. TG-DTG analysis publicized the thermal stability of NCFs. The tensile strength of NCFs was higher than normal cotton fabrics. These NCFs exhibited good antibacterial properties which considered for making aprons and wound dressing materials in medicine and for packing materials.