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Authordc.contributor.authorFonseca, Carmen 
Authordc.contributor.authorOchoa, Almudena 
Authordc.contributor.authorUlloa Flores, María Teresa 
Authordc.contributor.authorÁlvarez Duarte, Eduardo 
Authordc.contributor.authorCanales, Daniel 
Authordc.contributor.authorZapata, Paul A. 
Admission datedc.date.accessioned2015-12-13T19:48:39Z
Available datedc.date.available2015-12-13T19:48:39Z
Publication datedc.date.issued2015
Cita de ítemdc.identifier.citationMaterials Science and Engineering C 57 (2015) 314–320en_US
Identifierdc.identifier.otherDOI: 10.1016/j.msec.2015.07.069
Identifierdc.identifier.urihttps://repositorio.uchile.cl/handle/2250/135666
General notedc.descriptionArtículo de publicación ISIen_US
Abstractdc.description.abstractPoly(lactic acid) (PLA) composites with titanium oxide (TiO2) similar to 10-nm nanoparticles were produced by the melting process and their main properties were evaluated. The nanoparticles are homogeneously dispersed in the matrix with a low degree of agglomeration, as seen by transmission electron microscopy (TEM). The crystallinity temperature increased similar to 12% when 5 wt.% of TiO2 was added, showing that the nanoparticles acted as nucleating agents this trend was confirmed by optical images. The elastic modulus increased similar to 54% compared to neat PIA at 5 wt.% of nanoparticles. Despite these improvements, PLA/TiO2 nanocomposites showed lower shear viscosity than neat PIA, possibly reflecting degradation of the polymer due to the particles. Regarding biocidal properties, after 2 h of contact the PLA/TiO2 composites with 8 wt% TiO2 showed a reduction of Escherichia colt colonies of similar to 82% under no UVA irradiation compared to pure PIA This biocidal characteristic can be increased under UVA irradiation, with nanocomposites containing 8 wt.%TiO2 killing 94% of the bacteria. The PLA/TiO2 nanocomposites with 8 wt.% were also 99.99% effective against Aspergillus fumigatus under the UVA irradiation.en_US
Lenguagedc.language.isoenen_US
Publisherdc.publisherElsevieren_US
Type of licensedc.rightsAtribución-NoComercial-SinDerivadas 3.0 Chile*
Link to Licensedc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/*
Keywordsdc.subjectNanocompositesen_US
Keywordsdc.subjectPolymer matrix composites (PMCs)en_US
Keywordsdc.subjectNano particlesen_US
Keywordsdc.subjectMechanical propertiesen_US
Keywordsdc.subjectThermal propertiesen_US
Títulodc.titlePoly(lactic acid)/TiO2 nanocomposites as alternative biocidal and antifungal materialsen_US
Document typedc.typeArtículo de revista


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Atribución-NoComercial-SinDerivadas 3.0 Chile
Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 Chile