Nanogels of the polypropylene modified by gamma irradiation and incorporation of AgNPs biocide
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2016
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BRAZILIAN MRS MEETING, 15th
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The objective of this work is to study the formation of nanogel and microgel in
modified polypropylene (PP) and incorporation of silver nanoparticles. The PP in
pellets was modified by gamma irradiation of pristine PP under a crosslinking
atmosphere of acetylene in doses of 5, 12.5 and 20 kGy, followed by thermal
treatment for radical recombination and annihilation of the remaining radicals.
Thin film of polypropylene gel was obtained by extraction in boiling xylene for
period of 12 hours at 138 °C, followed by decantation in beaker at room
temperature of 25°C with the total volatilization of the xylene. Deposition of dried
material on fine glass blades under agitation by settling process formed films
containing nanosilver. The thin films of gel AgNPs formed of pristine PP, as well
as, modified (i.e., irradiated) were characterized using Scanning Electron
Microscopy (SEM), Energy Dispersive Spectroscopy (EDX), Atomic Force
Microscopy (AFM), X-Ray diffraction (DRX), Differential Scanning Calorimetry
(DSC) other than determination of antibacterial activity. The PP morphology
indicated the nanogels and microgel formation with increase of spherulites
concentration and crystallinity at dose 12.5 kGy. Further, the antibacterial
properties of the gel-AgNPs polypropylene were investigated against Escherichia
coli (Gram-negative) and Staphylococcus aureus (Gram-positive) bacteria.
Como referenciar
OLIANI, WASHINGTON L.; KOMATSU, LUIZ G.H.; LUGAO, ADEMAR B.; PARRA, DUCLERC F. Nanogels of the polypropylene modified by gamma irradiation and incorporation of AgNPs biocide. In: BRAZILIAN MRS MEETING, 15th, September 25-29, 2016, Campinas, SP. Abstract... p. 693-693. Disponível em: http://repositorio.ipen.br/handle/123456789/27548. Acesso em: 27 Mar 2026.
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.