Biosynthesized Silver Nanoparticles for Antibacterial Treatment of Cellulosic Fabrics Using O2-Plasma. Issue 1 (January 2014)

• Record Type: Journal Article
• Authors: Abdel-Aziz, M. S.; Eid, B. M.; Ibrahim, N. A.
• Is Part Of: AATCC Journal of Research. Volume 1:Issue 1(2014)
• Page Start: 6
• Page End: 12
• Publication Date: 2014-01
• Subjects: Antibacterial Finish -- Biosynthesis -- Cellulosic Substrates -- O2-plasma -- Silver Nanoparticles
• DOI: 10.14504/ajr.1.1.2
• Languages: English
• ISSNs: 2472-3444

Abstract

A silver-tolerant (3.5 mM silver nitrate) marine bacterial isolate ( Bacillus sp.) was used for biosynthesis of Ag-nanoparticles. UV-Vis spectra showed an absorption peak between 410 and 440 nm. Transmittance electron microscopic (TEM) analysis indicated the presence of 2 to 7 nm Ag-nanoparticles. O2 -plasma pretreatment, followed by subsequent treatment with biosynthesized Ag-nanoparticles, improved loading and fixation onto the activated surfaces of the cellulosic fabrics (linen, cotton, and lyocell), and improved antibacterial activities against Gram-positive ( Staphylococcus aureus ) and Gram-negative ( Escherichia coli ) bacteria. Presence of Ag-nanoparticles on linen and lyocell surfaces was confirmed using scanning electron microscope (SEM) images. Antibacterial activity showed no severe reduction even after 15 washing cycles. Surface modification extent, Ag-nanoparticle loading, as well as antibacterial activity, was determined by the nature of cellulosic substrate.