CHEMICAL ENGINEERING JOURNAL, cilt.228, ss.489-495, 2013 (SCI-Expanded)
Silver nanoparticles have been fabricated within reverse micelle cores of polystyrene-block-polyacrylic acid (PS-b-PAA) copolymer synthesized by the atom transfer free radical polymerization (ATRP) method at various silver:copolymer ratios. The PS-b-PAA reverse micelles formed by dissolving the copolymer in toluene have been characterized by transmission electron microscopy (TEM) and dynamic light scattering (DLS). Silver nanoparticles synthesized within the micellar cores have been characterized by TEM and powder X-ray diffraction (XRD). It has been determined that crystal silver nanoparticles were formed at whole ratios. The average size of the silver nanoparticles was found to be independent of the silver precursor ratio and is around 20 nm for all ratios. The copolymer solution including silver nanoparticles has been coated onto textile fabrics for antibacterial activity. It has been determined that an esterification reaction takes place between corona (PM) and hydroxyl groups on the textile surfaces which enhances the permanency of antibacterial activity of the fabrics. Significant antibacterial activity against gram-negative Escherichia coli (E. coli) and gram-positive Staphylococcus aureus (S. aureus) have been determined. The antibacterial activity is permanent up to five washings against E. coli and up to twenty washings against S. aureus. (C) 2013 Elsevier B.V. All rights reserved.