NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Direct Analysis of the Ion-Hopping Process Associated With the [alpha]-Relaxation in Perfluorosulfonate Ionomers Using Quasielastic Neutron Scattering
Published
Author(s)
Kirt A. Page, Jong K. Park, R B. Moore, Victoria Garcia Sakai
Abstract
This work demonstrates the ability of quasi-elastic neutron scattering to observe the dynamics associated with counterions in perfluorosulfonate ionomers (PFSIs). PFSI membranes were prepared by neutralizing with hydrogenated alky ammonium counterions. Counterion dynamics were measured using the high-flux back-scattering spectrometer at the NIST Center for Neutron Research (NCNR). The data presented here show the link between the onset of long-range counterion mobility and the mechanical properties of these materials. These data provide further fundamental understanding of the link between electrostatic interactions and dynamics in ionomers.
Page, K.
, Park, J.
, Moore, R.
and Garcia, V.
(2009),
Direct Analysis of the Ion-Hopping Process Associated With the [alpha]-Relaxation in Perfluorosulfonate Ionomers Using Quasielastic Neutron Scattering, Macromolecules, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=852739
(Accessed October 8, 2025)