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Rheological and structural details of biocidal iPP-TiO 2 nanocomposites

AuthorsSerrano, Cristina ; Cerrada, María L. ; Fernández-García, Marta ; Ressia, Jorge; Vallés, Enrique M.
α Polymorph
Rheological parameters
Issue Date2012
CitationEuropean Polymer Journal 48(3): 586-596 (2012)
AbstractNanocomposites obtained from incorporation of TiO 2 nanoparticles in different amounts, ranging from 0.5 to 5 wt.%, into an isotactic polypropylene (iPP) matrix are achieved via a straightforward and cost-effective melting process. These materials exhibit a powerful germicide capability over a wide variety of regular bacteria and other microorganisms widely present in the environment that cause infections and serious illness. The iPP-TiO 2 nanocomposites show similar or improved structural characteristics than those of the pure iPP matrix and aspects as important as processability and final mechanical performance seem to be not affected because of the incorporation of these TiO 2 nanoparticles. Validation of time-temperature superposition of the molten polymers is observed within the temperature range analyzed. On the other hand, the α polymorph is the one primarily attained for these specimens. Crystallinity and most probable crystallite size are slightly dependent on TiO 2 content, both increasing as oxide composition is enlarged. © 2011 Elsevier Ltd. All rights reserved.
Identifiersdoi: 10.1016/j.eurpolymj.2011.12.012
issn: 0014-3057
e-issn: 1873-1945
Appears in Collections:(ICTP) Artículos
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