Akademik Veri Yönetim Sistemi
FIBERS AND POLYMERS, cilt.23, sa.3, ss.589-600, 2022 (SCI-Expanded)
One of the most industrially-prominent fibers, polyacrylonitrile (PAN), was chemically modified with the two specific steps to gain new functional groups that enable the surface chemically attractive. First, the chemically-susceptible epoxy groups were introduced to the PAN through graft copolymerization of glycidyl methacrylate using benzoyl peroxide (Bz(2)O(2)) as an initiator. Secondly, the surface of GMA grafted-PAN fibers (PAN-g-GMA) was decorated by the poly(p-phenylenediamine) (PFDA) and Ag nanoparticles through the in-situ oxidative polymerization of p-phenylenediamine (p-FDA) using AgNO3. The changes in the PAN fiber's weights were monitored by changing the experimental conditions such as Bz(2)O(2) and GMA concentrations, polymerization temperature-time, and AgNO3/p-FDA mol ratio. The usage of 5x10(-3) M of Bz(2)O(2) and 0.5 M of GMA at 85 degrees C for 1 h ensured over 95 % of GMA graft yields to the PAN-g-GMA fibers. Structural, thermal, and morphological changes that occurred in the PAN fiber were examined in detail using ATR-FTIR, XRD, TGA, Optical Microscope, and SEM techniques, respectively. A grey metallic shine was detected by optic microscopy on the composite surface after the PFDA/Ag nanoparticles deposition. Finally, the antibacterial activity performance of the Ag particles anchored-composite fiber was determined against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) by the zone inhibition test. The Ag particles decorated-composite showed high antibacterial activity, especially against E. coli (16.5 cm inhibition) compared to Ag-unloaded one. A suitable methodology was presented to develop a fiber composite that will potentially be used as an antibacterial textile in the various material preparation fields.