Environmentally Controlled Infrared Spectroscopy System for Fundamental Studies of Polymer Electrolyte Membranes

Abstract

Dehydration studies of ionomer (Nafion and SPEEK) membranes were accomplished using a high pressure/ high temperature infrared cell.Categorization of ionomer exchange site normal modes by exchange site local symmetry enabled correlation of the exchange site structure tostate-of-hydration. Polarization modulated infrared reflection-absorption spectroscopy experiments are enabled by the use of a spin-coater tocoat SiO2 and Pt surfaces with ionomer solutions. PM-IRRAS allows for the determination of what ionomer functional groups are orderedby the Pt surface and are involved in adsorption. Also, the ionomer membranes are being used in a specialized reaction system, where olefinsare isomerized and analyzed using a gas chromatograph-mass spectrometer. By varying the reaction cell potential, the catalyst acidity can betuned.

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Document Details

Document Type
Technical Report
Publication Date
Oct 15, 2015
Accession Number
AD1008601

Entities

People

  • Andy Vong
  • Cassandra Johnson
  • Erin Kingston
  • Eugene S Smotkin
  • Jonathan Doan
  • Kierstyn P Anderson
  • Neili Loupe
  • Nilufar Nasirova

Organizations

  • Northeastern University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Alkenes
  • Dehydration
  • Department Of Defense
  • Fuel Cells
  • High Pressure
  • High Temperature
  • Hydration
  • Infrared Spectroscopy
  • Ion Exchange
  • Mass Spectrometers
  • Measurement
  • Neutron Reflectometry
  • Reflectometry
  • Spectra
  • Spectroscopy
  • Thin Films
  • X Rays

Fields of Study

  • Chemistry

Readers

  • Analytical Chemistry
  • Nanocomposite Materials Science
  • Thin Film Deposition Science.