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Experimental validation of computational models for mass transport through micro heterogeneous membranes
- Source :
- Journal of Membrane Science. 437:25-32
- Publication Year :
- 2013
- Publisher :
- Elsevier BV, 2013.
-
Abstract
- This work describes a setup for the experimental and theoretical study of the mass transport of a penetrant through a two-dimensional model-material microstructure consisting in a homogeneous matrix with slender obstacles. Experiments were performed using polydimethylsiloxane (PDMS) specimens with a controlled pattern of randomly distributed laser-ablated microscopic slender holes that mimic the obstacles to the diffusion of the penetrant, 1-octadecanol (ODOL). Mass transport of ODOL throughout the patterned PDMS matrix was monitored by means of Confocal Raman microscopy. Rigorous numerical simulations of ODOL transport in transient regime were performed using the Boundary Element Method for exactly the same model-material microstructure topology used in the experimental tests. It was found that both, experiments and BEM simulations very well capture local barrier effects of the obstacles to the ODOL transport. The whole strategy provides a valuable base for validation and experimental verification of theoretical models of mass transport through heterogeneous membranes with complex barrier structure. Fil: Dondero, Marco. Universidad Nacional de Mar del Plata. Facultad de Ingenieria; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina Fil: Cisilino, Adrian Pablo. Universidad Nacional de Mar del Plata. Facultad de Ingenieria; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina Fil: Tomba, Juan Pablo. Universidad Nacional de Mar del Plata. Facultad de Ingenieria; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina
- Subjects :
- Computational model
Recubrimientos y Películas
Polydimethylsiloxane
BARRIER MEMBRANE
Filtration and Separation
Nanotechnology
INGENIERÍAS Y TECNOLOGÍAS
Mechanics
Microstructure
Biochemistry
chemistry.chemical_compound
symbols.namesake
MASS TRANSPORT
Membrane
Penetrant (mechanical, electrical, or structural)
chemistry
Ingeniería de los Materiales
BOUNDARY ELEMENTS
Microscopy
symbols
CONFOCAL RAMAN MICROSCOPY
General Materials Science
Physical and Theoretical Chemistry
Raman spectroscopy
Boundary element method
Subjects
Details
- ISSN :
- 03767388
- Volume :
- 437
- Database :
- OpenAIRE
- Journal :
- Journal of Membrane Science
- Accession number :
- edsair.doi.dedup.....d5c6da708287b9a3deef77e67a67131f