Luminescence Probe Studies of Ionomers. II. Steady-State Measurements from Sulfonated Polyethylene and Teflon Membranes.

Abstract

Luminescence probe studies of sulfonated Teflon and sulfonated polyethylene ionomer membranes are described. These membranes were obtained from RAI Research Corporation of Hauppauge, N.Y. and were prepared via radiation grafting sidechains onto preformed Teflon and polyethylene sheets. The intent of these investigations was to determine how the membrane water content and the nature of the counterion affect the chemical characteristics of the ionic cluster phases in these ionomers. Three luminescent molecules, pyrene, Ru(bpy)32+ (bpy=2,2'-bipyridine), and a quaternary ammonium-containing dansyl derivative were used to probe the cluster microenvironment. We have found that the cluster micropolarity is quite dynamic, being close to aqueous-like when the membrane water content is high and extremely nonpolar when the water content is low. These studies also suggest that mainchain material intrudes into the ionic cluster. Originator supplied keywords include: Ion exchange membranes; Luminescence probe studies; RAI membranes.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Feb 03, 1985
Accession Number
ADA152233

Entities

People

  • C. R. Martin
  • M. N. Szentirmay
  • N. E. Prieto

Organizations

  • Texas A&M University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chemical Synthesis
  • Chemistry
  • Dielectric Polymers
  • Fluoropolymers
  • Hydrocarbons
  • Luminescence
  • Macromolecules
  • Materials
  • Membranes
  • Military Research
  • Molecules
  • Organic Chemistry
  • Polymers
  • Quantum Yields
  • Radiation
  • Spectra
  • Steady State

Readers

  • Analytical Chemistry
  • Electrochemical Surface Science
  • Polymer Science and Technology