Low density polyethylene (ldpe) nanocomposites with passive and active barrier properties

JOURNAL OF THE CHILEAN CHEMICAL SOCIETY;
J. Chil. Chem. Soc.

dc.creatorPerez-Rivera, Monica de Los Angeles 
dc.creatorRivas-Quiroz, Bernabe Luis
dc.creatorGarrido-Miranda, Karla A.
dc.creatorCampos-Requena, Victor H.
dc.creatorMartinez, Miguel
dc.creatorCastano, Johanna
dc.creatorMaldonado-Mendoza, Alvaro Andres
dc.date2017-04-27T18:49:31Z
dc.date2022-07-07T01:39:38Z
dc.date2017-04-27T18:49:31Z
dc.date2022-07-07T01:39:38Z
dc.date2014
dc.date.accessioned2023-08-21T21:10:56Z
dc.date.available2023-08-21T21:10:56Z
dc.identifier0
dc.identifierD10I1234
dc.identifierD10I1234
dc.identifierWOS:000342613100009
dc.identifier0717-9707
dc.identifierhttps://hdl.handle.net/10533/196876
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8282770
dc.descriptionNanocomposites based on Low Density Polyethylene (LDPE) containing organically modified montmorillonite (OMMT) and polyethylene grafted with maleic anhydride (PE-g-MA) were obtained by the mixing molten state method at 130 degrees C (LDPE/PE-g-MA/Cv/OMMT). Furthermore, in order to obtain a material with active barrier properties, carvacrol (Cv) was incorporated into the nanocomposite (LDPE/PE-g-MA/Cv/OMMT). Carvacrol is an essential oil component with a high antimicrobial, antifungal, and antiparasitic capability. The nanocomposites were characterized by XRD, DSC, TGA, oxygen permeability, and tensile test. The nanocomposites without Cv (LDPE/PE-g-MA/OMMT) showed an intercalated morphology (confirmed by the X ray diffraction analysis), an improved percentage of crystallinity and a reduced permeability to oxygen (25%) as compared with LDPE. The rigidity of the resulting material correlated with the clay content as expected. The nanocomposite containing Cv (LDPE/PE-g-MA/Cv/OMMT) also show intercalated morphology with a greater displacement between the clay layers as compared with the nanocomposite without Cv produced by intercalation of the antimicrobial agent between the layers. The antimicrobial activity of (LDPE/PE-g-MA/Cv/OMMT) was observed by the reduction or inhibition on bacterial (Escherichia coli and Staphylococcus aureus) growth.
dc.descriptionThe authors thank FONDEF (Grant No DI0i1234), REDOC (MINEDUC Project UCO1202 at U. de Concepcion) and CONICYT REGIONAL CIPA (Centro de Investigacion de Polimeros Avanzados) R08C1002
dc.description1
dc.descriptionFONDEF
dc.description0
dc.descriptionFONDEF [DI0i1234]; REDOC (MINEDUC Project at U. de Concepcion) [UCO1202]
dc.descriptionFONDEF
dc.languageENG
dc.publisherSOC CHILENA QUIMICA
dc.relationinstname: Conicyt
dc.relationreponame: Repositorio Digital RI2.0
dc.relationinstname: Conicyt
dc.relationreponame: Repositorio Digital RI2.0
dc.relationinfo:eu-repo/grantAgreement/Fondef/D10I1234
dc.relationinfo:eu-repo/semantics/dataset/hdl.handle.net/10533/93477
dc.relationhttps://doi.org/10.4067/S0717-97072014000200009
dc.rightsinfo:eu-repo/semantics/openAccess
dc.titleLow density polyethylene (ldpe) nanocomposites with passive and active barrier properties
dc.titleJOURNAL OF THE CHILEAN CHEMICAL SOCIETY
dc.titleJ. Chil. Chem. Soc.
dc.typeArticulo
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.coverageCONCEPCION


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