2024-03-28T11:04:30Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1275352022-12-20T16:50:59Zcom_10261_56com_10261_3com_10261_131com_10261_2col_10261_309col_10261_384
Synergistic effect of lactic acid oligomers and laminar graphene sheets on the barrier properties of polylactide nanocomposites obtained by the in situ polymerization pre-incorporation method
Ambrosio-Martín, Jesús
López-Rubio, Amparo
Fabra, María José
López-Manchado, Miguel A.
Sorrentino, Andrea
Gorrasi, Giuliana
Lagarón Cabello, José María
Ministerio de Economía y Competitividad (España)
Biopolymers and renewable polymers
Biodegradable
Composites
Nanocomposites of polylactide (PLA) and functionalized graphene sheets (FGS) were obtained via melt compounding. Pre-incorporation of the FGS fillers into lactic acid oligomers (OLLA) by in situ melt polycondensation was performed with the aim of improving the FGS dispersion and distribution into the polymeric matrix. To evaluate the effect of the pre-incorporation step, a comparison with direct addition of the filler to the melt mixing process was carried out. Addition of OLLA and FGS led to enhanced better barrier properties. Specifically, reductions of up to 45% and 41% in oxygen and water vapor permeability were achieved, respectively. Mechanical and electrical properties of the PLA and its nanocomposites were also studied and correlated with both the addition of oligomers and the incorporation method.
J. Ambrosio-Martın would like to thank the Spanish Ministry ofEconomy and Competitiveness for the FPI grant BES-2010–038203. M.J. Fabra is recipient of a “Juan de la Cierva” contractfrom the Spanish Ministry of Economy and Competitiveness. Theauthors acknowledge financial support from the MINECO(MAT2012–38947-C02-01 project) and from the FP7 ECOBIO-CAP project.
Peer Reviewed
2016-01-13T10:13:46Z
2016-01-13T10:13:46Z
2016
2016-01-13T10:13:46Z
artículo
http://purl.org/coar/resource_type/c_6501
doi: 10.1002/app.42661
issn: 0021-8995
e-issn: 1097-4628
Journal of Applied Polymer Science 133(2) : 42661 (2016)
http://hdl.handle.net/10261/127535
10.1002/app.42661
http://dx.doi.org/10.13039/501100003329
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/FP7/265669
Sí
none
John Wiley & Sons