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      저자 : Nihan Seven Eroğlu (검색결과 1 건)
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        Successive Chemical Modification of Poly(acrylonitrile) Fibers with Glycidyl Methacrylate and Poly(p-phenylenediamine)/Ag Particles for an Efficient Antibacterial Activity

        Nihan Seven Eroğlu 한국섬유공학회 2022 Fibers and polymers Vol.23 No.3

        One of the most industrially-prominent fibers, polyacrylonitrile (PAN), was chemically modified with the twospecific steps to gain new functional groups that enable the surface chemically attractive. First, the chemically-susceptibleepoxy groups were introduced to the PAN through graft copolymerization of glycidyl methacrylate using benzoyl peroxide(Bz2O2) as an initiator. Secondly, the surface of GMA grafted-PAN fibers (PAN-g-GMA) was decorated by the poly(pphenylenediamine)(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 suchas Bz2O2 and GMA concentrations, polymerization temperature-time, and AgNO3/p-FDA mol ratio. The usage of 5×10-3 Mof Bz2O2 and 0.5 M of GMA at 85 ºC 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 thecomposite surface after the PFDA/Ag nanoparticles deposition. Finally, the antibacterial activity performance of the Agparticles 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 thatwill potentially be used as an antibacterial textile in the various material preparation fields.

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