Structure, gas-barrier properties and overall migration of poly(lactic acid) films coated with hydrogenated amorphous carbon layers
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http://hdl.handle.net/10045/37887
Títol: | Structure, gas-barrier properties and overall migration of poly(lactic acid) films coated with hydrogenated amorphous carbon layers |
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Autors: | Mattioli, Samantha | Peltzer, Mercedes Ana | Fortunati, Elena | Armentano, Ilaria | Jiménez, Alfonso | Kenny, José María |
Grups d'investigació o GITE: | Análisis de Polímeros y Nanomateriales |
Centre, Departament o Servei: | Universidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatología |
Paraules clau: | Hydrogenated amorphous carbon | Poly(lactic acid) films | Food packaging |
Àrees de coneixement: | Química Analítica |
Data de publicació: | de novembre-2013 |
Editor: | Elsevier |
Citació bibliogràfica: | Carbon. 2013, 63: 274-282. doi:10.1016/j.carbon.2013.06.080 |
Resum: | Hydrogenated amorphous carbon (a-C:H) films were grown on a poly(lactic acid) (PLA) substrate by means of a radiofrequency plasma-enhanced chemical vapour deposition (rf-PECVD) technique with different deposition times (5, 20 and 40 min). The main goal of this treatment was to increase the barrier properties of PLA, maintaining its original transparency and colour as well as controlling interactions with food simulants for packaging applications. Morphological, chemical, and mechanical properties of PLA/a-C:H systems were evaluated while permeability and overall migration tests were performed in order to determine the effect of the plasma treatment on the gas-barrier properties of PLA films and their application in food packaging. Morphological results suggested a good adhesion of the deposited layers onto the polymer surface and the samples treated for 5 and 20 min only slightly darkened the PLA film. X-ray photoelectron spectroscopy revealed that the structural properties of the carbon layer deposited onto the PLA film depend on the exposure time. PLA/a-C:H system treated for 5 min showed the highest barrier properties, while none of the studied samples exceeded the migration limit established by the current legislation, suggesting the suitability of these materials in packaging applications. |
Patrocinadors: | Authors gratefully acknowledge the financial support from the National Consortium of Materials Science and Technology (INSTM) and Spanish Ministry of Economy and Competiveness (MAT2011-28468-C02-01). |
URI: | http://hdl.handle.net/10045/37887 |
ISSN: | 0008-6223 (Print) | 1873-3891 (Online) |
DOI: | 10.1016/j.carbon.2013.06.080 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/article |
Revisió científica: | si |
Versió de l'editor: | http://dx.doi.org/10.1016/j.carbon.2013.06.080 |
Apareix a la col·lecció: | INV - NANOBIOPOL - Artículos de Revistas |
Arxius per aquest ítem:
Arxiu | Descripció | Tamany | Format | |
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2013_Mattioli_etal_Carbon_final.pdf | Versión final (acceso restringido) | 1,26 MB | Adobe PDF | Obrir Sol·licitar una còpia |
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