Publicación:
A SIMPLE 2D PORESCALE NETWORK MODEL FOR THE TRANSPORT OF WATER VAPOR AND OXYGEN UN POLYMERIC FILMS.

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dc.creatorLUIS ANDRÉS SEGURA PONCE
dc.date2012
dc.date.accessioned2025-01-10T14:30:09Z
dc.date.available2025-01-10T14:30:09Z
dc.date.issued2012
dc.description.abstractA MATHEMATICAL MODEL WAS DEVELOPED TO DESCRIBE MASS TRANSPORT IN POLYMERIC FILMS BASED ON MODIFICATIONS OF FICK?S LAW IN A CONTINUOUS MACROSCOPIC APPROACH. THE PURPOSE OF THIS WORK WAS SPECIFICALLY TO MODEL THE TRANSPORT OF WATER VAPOR AND OXYGEN IN POLYMERIC FILMS AT THE PORE LEVEL, BASED ON PHYSICAL ASPECTS OF THE CONDENSATION PRO CESS AND THE MORPHOLOGY AND CONNECTIVITY OF THE POROUS MEDIUM, WITH TWO-DIMENSIONAL PORE NETWORKS REPRESENTING PORE SPACES. USING A PORE SCALE DISCRETE MODEL, WE FOUND THAT THE PORE-LEVEL DISTRIBUTIONS OF LIQUID (CONDENSATE) AND VAPOR AS TRANSPORT PHENOM ENA OCCURRED. THE VAPOR AND OXYGEN DIFFUSIVITIES RANGED FROM 4.22×10-6 TO 3.16×10-7 CM2/S AND FROM 3.66×10-6 TO 2.86×10-7 CM2/S, RESPECTIVELY. ALSO, THE VAPOR AND OXYGEN PERMEABILITIES RANGED FROM 2.61×10-3 TO 3.83×10-4 ND (1ND=10-21M2) AND FROM 6.77×10-3 TO 1.35×10-3 ND, RESPECTIVELY. THE TRANSPORT PROPERTIES OBTAINED BY THE MODEL WERE COMPARED WITH THE CORRESPONDING RESULTS FOR CHITOSAN FILMS OBTAINED IN PREVIOUS EXPERIMENTAL STUDIES, SHOWING A PARTIAL AGREEMENT.
dc.formatapplication/pdf
dc.identifier.issn1851-8796
dc.identifier.issn0327-0793
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/7711
dc.languagespa
dc.publisherLATIN AMERICAN APPLIED RESEARCH
dc.rightsPUBLICADA
dc.subjectWATER VAPOR
dc.subjectPOROUS FILM
dc.subjectOXYGEN
dc.subjectDIFFUSIVITY
dc.subjectCONDENSATION
dc.titleA SIMPLE 2D PORESCALE NETWORK MODEL FOR THE TRANSPORT OF WATER VAPOR AND OXYGEN UN POLYMERIC FILMS.
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA EN ALIMENTOS
ubb.SedeCHILLÁN
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