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Effect of functionalized silica nanoparticles on the mass transfer process in active PLA nanocomposite films obtained by supercritical impregnation for sustainable food packaging

dc.contributor.authorSepulveda, Javiera
dc.contributor.authorVillegas, Carolina
dc.contributor.authorTorres, Alejandra
dc.contributor.authorVargas, Esteban
dc.contributor.authorRodriguez, Francisco
dc.contributor.authorBaltazar, Samuel
dc.contributor.authorPrada, Alejandro
dc.contributor.authorRojas, Adrian
dc.contributor.authorRomero, Julio
dc.contributor.authorFaba, Simon
dc.contributor.authorGalotto, María J.
dc.date.accessioned2020-11-12T12:33:24Z
dc.date.available2020-11-12T12:33:24Z
dc.date.issued2020
dc.identifier.urihttp://repositorio.ucm.cl/handle/ucm/3180
dc.description.abstractNanocomposite films based on PLA with 1.0 % w/w silica nanoparticles (NP) and surface-functionalized silica nanoparticles with lactic acid (NP-LA), respectively, were obtained by extrusion process. Subsequently, cinnamaldehyde (ci) was incorporated through supercritical impregnation in the films at a pressure of 12 MPa, 40 °C temperature and 1.0 MPa min−1 depressurization rate. The developed materials were characterized on their thermal-mechanical, structural and barrier properties. Simultaneously, a phenomenological mass transfer was used to describe the release of cinnamaldehyde from the bionanocomposite in an aqueous food simulant (ethanol 10 % v/v solution). A 44 % decrease in oxygen permeability concerning the material without nanoparticles was checked as well as the plasticizing effect of cinnamaldehyde. Regarding the release of the active compound, the incorporation of functionalized nanoparticles NP-LA decreased the diffusion coefficient from 3.5·10−14 to 0.9·10−14 (m2/s), obtaining the filling effect of the silica nanoparticles, delaying the active compound release.es_CL
dc.language.isoenes_CL
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 Chile*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/*
dc.sourceJournal of Supercritical Fluids, 161, 104844es_CL
dc.subjectNanocompositeses_CL
dc.subjectSurface-functionalized silica nanoparticleses_CL
dc.subjectPolylactic acides_CL
dc.subjectSupercritical impregnationes_CL
dc.subjectActive compound mass transferes_CL
dc.titleEffect of functionalized silica nanoparticles on the mass transfer process in active PLA nanocomposite films obtained by supercritical impregnation for sustainable food packaginges_CL
dc.typeArticlees_CL
dc.ucm.facultadFacultad de Ciencias de la Ingenieríaes_CL
dc.ucm.indexacionScopuses_CL
dc.ucm.indexacionIsies_CL
dc.ucm.urisibib2.ucm.cl:2048/login?url=https://www.sciencedirect.com/science/article/abs/pii/S0896844620300954es_CL
dc.ucm.doidoi.org/10.1016/j.supflu.2020.104844es_CL


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Atribución-NoComercial-SinDerivadas 3.0 Chile
Excepto si se señala otra cosa, la licencia de la publicación se describe como Atribución-NoComercial-SinDerivadas 3.0 Chile