Boosting TiO2-anatase antimicrobial activity: Polymer-oxide thin films
作者： Anna Kubacka , Manuel Ferrer , María L. Cerrada , Cristina Serrano , Manuel Sánchez-Chaves
DOI: 10.1016/J.APCATB.2009.01.002
关键词: Scanning electron microscope 、 Nanocomposite 、 Anatase 、 Oxide 、 Analytical chemistry 、 Small-angle X-ray scattering 、 Polymer 、 Chemical engineering 、 Raman spectroscopy 、 Titanium oxide 、 Materials science
摘要: Abstract TiO2 incorporation into an isotactic polypropylene (iPP) polymeric matrix was achieved via a straightforward and cost-effective melting process using laboratory-made nanometric anatase-TiO2 industrial polymer. The structural characteristics of the resulting nanocomposite thin films as function inorganic component content were examined wide small angle X-ray scattering (WAXS/SAXS) vibrational Raman spectroscopy. Electron scanning transmission microscopy (SEM/TEM) studies also performed to provide evidence dispersion oxide within polymer matrix, showing presence average aggregates ca. 80 nm. iPP renders self-sterilized upon light excitation, activity which tested against Gram negative (P. aeruginosa) positive (E. faecalis) bacteria. displays maximum for sample containing 2 wt.% irrespective microorganism nature. antimicrobial is significantly enhanced with respect that alone. This key fact interpreted on physical basis help complete optical (UV–vis photoluminescence) electron paramagnetic resonance (EPR) characterization.
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