Functionalized Nanostructured Tri-Block Copolymer Ionomers for Separations and Fuel Cell Applications

Rosado, David Suleiman

Title:

Functionalized Nanostructured Tri-Block Copolymer Ionomers for Separations and Fuel Cell Applications

dc.contributor.author	Rosado, David Suleiman
dc.contributor.corporatename	Georgia Institute of Technology. School of Chemical and Biomolecular Engineering
dc.contributor.corporatename	University of Puerto Rico (Mayagüez Campus)
dc.date.accessioned	2009-09-18T18:04:27Z
dc.date.available	2009-09-18T18:04:27Z
dc.date.issued	2009-09-09
dc.description	Presented on September 9, 2009, from 4-5 pm in room G011 of the Molecular Science and Engineering Building on the Georgia Tech Campus.	en
dc.description	Runtime: 34:24 minutes
dc.description.abstract	Proton exchange membranes (PEMs), commonly used in direct methanol fuel cells (DMFC), are typically limited by either high methanol permeability (also known as the cross-over limitation) or low proton conductivity. A potential alternative to this problem is to use thermoplastic elastomers (TPE) with rubbery and glassy thermodynamically immiscible microphases. The glassy segment is often composed of polystyrene, which can be sulfonated to high ion exchange capacities (IEC), and thus creates ion containing polymers or ionomers. Linear poly-styreneisobutylene- styrene (SIBS) and both, linear and branched poly-styrene-isoprene-styrene (SIS), were sulfonated and functionalized with different cations (size and electronegativity). Controlling the degree of sulfonation and the functionalization allowed for selective membranes that could be used for applications such as fuel cells, gas sensors, and permselective separations. In addition, supercritical fluid processing allowed for additional morphological changes, especially with perfluorinated membranes. This presentation will review some of the critical materials characterization results including elemental analysis (EA), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and Fourier transform infrared spectroscopy (FT-IR). The kinetic and transport properties will also be discussed for the development of separation processes and catalytic nanochannel reactor arrays for fuel cell applications.	en
dc.format.extent	34:24 minutes
dc.identifier.uri	http://hdl.handle.net/1853/30139
dc.language.iso	en_US	en
dc.publisher	Georgia Institute of Technology	en
dc.relation.ispartofseries	School of Chemical and Biomolecular Engineering Seminar Series	en_US
dc.relation.ispartofseries	School of Chemical and Biomolecular Engineering Seminar Series
dc.subject	Differential scanning calorimetry (DSC)	en
dc.subject	Dynamic mechanical analysis (DMA)	en
dc.subject	Elemental analysis (EA)	en
dc.subject	Fourier transform infrared spectroscopy (FT-IR)	en
dc.subject	Fuel cell applications	en
dc.subject	Proton exchange membranes	en
dc.subject	Thermogravimetric analysis (TGA)	en
dc.title	Functionalized Nanostructured Tri-Block Copolymer Ionomers for Separations and Fuel Cell Applications	en
dc.type	Moving Image
dc.type.genre	Lecture
dspace.entity.type	Publication
local.contributor.corporatename	School of Chemical and Biomolecular Engineering
local.contributor.corporatename	College of Engineering
local.relation.ispartofseries	School of Chemical and Biomolecular Engineering Seminar Series
relation.isOrgUnitOfPublication	6cfa2dc6-c5bf-4f6b-99a2-57105d8f7a6f
relation.isOrgUnitOfPublication	7c022d60-21d5-497c-b552-95e489a06569
relation.isSeriesOfPublication	388050f3-0f40-4192-9168-e4b7de4367b4