Structure, gas-barrier properties and overall migration of poly(lactic acid) films coated with hydrogenated amorphous carbon layers
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Título: | Structure, gas-barrier properties and overall migration of poly(lactic acid) films coated with hydrogenated amorphous carbon layers |
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Autor/es: | Mattioli, Samantha | Peltzer, Mercedes Ana | Fortunati, Elena | Armentano, Ilaria | Jiménez, Alfonso | Kenny, José María |
Grupo/s de investigación o GITE: | Análisis de Polímeros y Nanomateriales |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatología |
Palabras clave: | Hydrogenated amorphous carbon | Poly(lactic acid) films | Food packaging |
Área/s de conocimiento: | Química Analítica |
Fecha de publicación: | nov-2013 |
Editor: | Elsevier |
Cita bibliográfica: | Carbon. 2013, 63: 274-282. doi:10.1016/j.carbon.2013.06.080 |
Resumen: | 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. |
Patrocinador/es: | 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 |
Tipo: | info:eu-repo/semantics/article |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1016/j.carbon.2013.06.080 |
Aparece en las colecciones: | INV - NANOBIOPOL - Artículos de Revistas |
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2013_Mattioli_etal_Carbon_final.pdf | Versión final (acceso restringido) | 1,26 MB | Adobe PDF | Abrir Solicitar una copia |
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