Fabrication of polypropylene/silver nanocomposites for biocidal applications
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Materials Science and Engineering C
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This paper presents a study on biocidal effect of polymer nanocomposite films of gamma irradiated polypropylene (PP) and silver nanoparticles. The modified polypropylene was obtained from isotactic polypropylene (iPP) in pellets form by irradiation with gamma rays in the presence of acetylene. A new morphology with long chain branching of PP and distinct rheology is obtained by this process. The blend of 50/50 wt neat PP and PP modified by gamma radiation were further mixed using a twin screw extruder. The AgNPs were infused into this polymer blend at different concentrations of: 0.1%; 0.25%; 05%; 1.0%; 1.0% (PVP), 2.0% and 4.0% by wt%. These polymer nanocomposites were characterized by Raman spectroscopy, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), thermogravimetric analysis (TG), differential scanning calorimetry (DSC), X-ray diffraction (XRD), transmission electron microscopy (TEM), cytotoxicity test and Kirby-Bauer disk diffusion techniques. The bactericidal effect of Pseudomonas aeruginosa (P. aeruginosa) and Staphylococcus aureus (S. aureus) were assessed in detail.
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OLIANI, WASHINGTON L.; PARRA, DUCLERC F.; KOMATSU, LUIZ G.H.; LINCOPAN, NILTON; RANGARI, VIJAYA K.; LUGAO, ADEMAR B. Fabrication of polypropylene/silver nanocomposites for biocidal applications. Materials Science and Engineering C, v. 75, p. 845-853, 2017. DOI: 10.1016/j.msec.2017.02.109. Disponível em: http://repositorio.ipen.br/handle/123456789/27883. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.
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nanocomposites; polypropylene; acetylene; branching ratio; calorimetry; concentration ratio; fabrication; films; gamma radiation; transmission electron microscopy; x-ray diffraction; nanoparticles; pseudomonas; pvp; raman spectroscopy; scanning electron microscopy; silver; staphylococcus; thermal gravimetric analysis; x radiation