Show simple item record

dc.contributor.advisorSuleiman-Rosado, David
dc.contributor.authorOcasio Velázquez, Mayra
dc.date.accessioned2018-05-16T16:56:28Z
dc.date.available2018-05-16T16:56:28Z
dc.date.issued2004
dc.identifier.urihttps://hdl.handle.net/20.500.11801/621
dc.description.abstractOver the past years, one of the most important challenges facing industry has been the search for environmentally benign and cost effective alternatives to traditional power sources. Many industries invest considerable amount of resources to develop and implement new methods of power production. One of the new technologies under consideration is a proton exchange membrane fuel cell (PEMFC). Nafion is the best-known ionomer membrane used in fuel cell and electrolysis applications due to its excellent chemical and mechanical stability and to its high ionic conductivity. The purpose of this work was to investigate the effects of supercritical fluid processing on the physical properties of Nafion and Styrene-ethylene-butylene-styrene (SEBS) ionomer membranes. Various co- solvents, with different solubility parameters, were employed in the search of improving polymer- scCO2 interaction. In this study, the properties of Nafion and SEBS polymers were investigated by thermal gravimetric analysis. Changes in the degradation temperature of Nafion and SEBS membranes were found as function of co-solvent and processing conditions used.en_US
dc.language.isoenen_US
dc.subjectProton exchange membrane fuel cell (PEMFC)en_US
dc.subjectSupercritical fluid processingen_US
dc.subjectNafionen_US
dc.subject.lcshFuel cells.en_US
dc.subject.lcshIonomer.en_US
dc.subject.lcshIon-pemeable membranes.en_US
dc.subject.lcshSupercritical fluids extractions.en_US
dc.subject.lcshThermogravimetry.en_US
dc.subject.lcshMembranes (Technology)en_US
dc.subject.lcshProton exchange membrane fuel cells.en_US
dc.titleSupercritical fluid processing of perfluorinated and sulfonated membranesen_US
dc.typeThesisen_US
dc.rights.licenseAll rights reserveden_US
dc.rights.holder(c) 2004 Mayra Ocasio Velázquezen_US
dc.contributor.committeeEstévez De Vidts, L. Antonio
dc.contributor.committeeColón Burgos, Guillermo
dc.contributor.committeeAponte Huertas, María A.
thesis.degree.levelM.S.en_US
thesis.degree.disciplineChemical Engineeringen_US
dc.contributor.collegeCollege of Engineeringen_US
dc.contributor.departmentDepartment of Chemical Engineeringen_US
dc.description.graduationYear2004en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

  • Theses & Dissertations
    Items included under this collection are theses, dissertations, and project reports submitted as a requirement for completing a degree at UPR-Mayagüez.

Show simple item record

All rights reserved
Except where otherwise noted, this item's license is described as All Rights Reserved