Physical-mechanical and antimicrobial properties of nanocomposite films with pediocin and ZnO nanoparticles.
作者： Paula Judith Perez Espitia , Nilda de Fátima Ferreira Soares , Reinaldo F Teófilo , Jane Sélia dos Reis Coimbra , Débora M Vitor
DOI: 10.1016/J.CARBPOL.2013.01.003
关键词: Composite material 、 Materials science 、 Nanoparticle 、 Chemical engineering 、 Swelling 、 Ultimate tensile strength 、 Nanocomposite 、 Thermogravimetry 、 Methyl cellulose 、 Thermal stability 、 Crystallinity
摘要: This work aimed to develop nanocomposite films of methyl cellulose (MC) incorporated with pediocin and zinc oxide nanoparticles (nanoZnO) using the central composite design response surface methodology. study evaluated film physical-mechanical properties, including crystallography by X-ray diffraction, mechanical resistance, swelling color microscopy characterization, thermal stability, as well antimicrobial activity against Staphylococcus aureus Listeria monocytogenes. NanoZnO affected crystallinity MC. Load at break tensile strength did not differ among films. significantly elongation break. Pediocin produced yellowish films, but nano ZnO balanced this effect, resulting in a whitish coloration. Nano exhibited good intercalation MC addition high concentrations resulted crater-like pits surfaces. Swelling diminished compared control. Higher enhanced stability. Nanocomposite presented tested microorganisms.
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