Nanoscale structure and morphology of sulfonated polyphenylenes via atomistic simulations
Journal Article
·
· Macromolecules
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
We performed atomistic simulations on a series of sulfonated polyphenylenes systematically varying the degree of sulfonation and water content to determine their effect on the nanoscale structure, particularly for the hydrophilic domains formed by the ionic groups and water molecules. We found that the local structure around the ionic groups depended on the sulfonation and hydration levels, with the sulfonate groups and hydronium ions less strongly coupled at higher water contents. In addition, we characterized the morphology of the ionic domains employing two complementary clustering algorithms. At low sulfonation and hydration levels, clusters were more elongated in shape and poorly connected throughout the system. As the degree of sulfonation and water content were increased, the clusters became more spherical, and a fully percolated ionic domain was formed. As a result, these structural details have important implications for ion transport.
- Research Organization:
- Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1371479
- Report Number(s):
- SAND--2017-1157J; 655053
- Journal Information:
- Macromolecules, Journal Name: Macromolecules Journal Issue: 3 Vol. 50; ISSN 0024-9297
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Scaling Behavior of Nafion with Different Model Parameterizations in Dissipative Particle Dynamics Simulations
|
journal | April 2018 |
Self-assembled highly ordered acid layers in precisely sulfonated polyethylene produce efficient proton transport
|
journal | May 2018 |
Morphology and proton diffusion in a coarse-grained model of sulfonated poly(phenylenes)
|
journal | September 2019 |
Similar Records
Morphology and proton diffusion in a coarse-grained model of sulfonated poly(phenylenes)
Impact of Hydration and Sulfonation on the Morphology and Ionic Conductivity of Sulfonated Poly(phenylene) Proton Exchange Membranes
Journal Article
·
Fri Sep 13 20:00:00 EDT 2019
· Journal of Chemical Physics
·
OSTI ID:1570275
Impact of Hydration and Sulfonation on the Morphology and Ionic Conductivity of Sulfonated Poly(phenylene) Proton Exchange Membranes
Journal Article
·
Mon Jan 14 19:00:00 EST 2019
· Macromolecules
·
OSTI ID:1492390