Impact of hydration and sulfonation on the morphology and ionic conductivity of sulfonated poly (phenylene) proton exchange membranes

EG Sorte, BA Paren, CG Rodriguez, C Fujimoto… - …, 2019 - ACS Publications
Multiple computational and experimental techniques are used to understand the nanoscale
morphology and water/proton transport properties in a series of sulfonated Diels–Alder poly …

Understanding of nanophase separation and hydrophilic morphology in Nafion and SPEEK membranes: A combined experimental and theoretical studies

R Wang, S Liu, L Wang, M Li, C Gao - Nanomaterials, 2019 - mdpi.com
The understanding of the relationship between the chemical structure and the hydrophilic
structure is crucial for the designing of high-performance PEMs. Comparative studies in …

Fabrication of amphiphilic nanoparticles via mixed homopolymer brushes and NMR characterization of surface phase separation

B Guzman-Juarez, A Abdelaal, K Kim, V Toader… - …, 2018 - ACS Publications
“Patchy particles”, where the surface is anisotropically patterned through variation in the
surface composition, can assemble into different colloidal crystal structures as well as act as …

Dynamic Heterogeneity of Filler‐Associated Interphases in Polymer Nanocomposites

H Schneider, M Roos, Y Golitsyn… - Macromolecular …, 2021 - Wiley Online Library
Dynamically inhomogeneous polymer systems exhibit interphases with mobility gradients.
These are believed to play key roles in the material's performance. A prominent example is …

[HTML][HTML] Morphology and proton diffusion in a coarse-grained model of sulfonated poly (phenylenes)

JA Clark, EE Santiso, AL Frischknecht - The Journal of Chemical …, 2019 - pubs.aip.org
A coarse-grained model previously used to simulate Nafion using dissipative particle
dynamics (DPD) is modified to describe sulfonated Diels-Alder poly (phenylene)(SDAPP) …

Dynamic heterogeneity and nanophase separation in rubber-toughened amine-cured highly cross-linked polymer networks

TM Alam, J Ahn, S Lee, SC Leguizamon, BH Jones - Polymer Testing, 2022 - Elsevier
Solid state nuclear magnetic resonance (NMR) spectroscopy and small-to wide-angle X-ray
scattering (SWAXS) methods were used to characterize the heterogeneous dynamics and …

Does the addition of a heteropoly acid change the water percolation threshold of PFSA membranes?

S Akbari, MTH Mosavian, F Moosavi… - Physical Chemistry …, 2019 - pubs.rsc.org
A large system containing heteropoly acids (HPAs) and Nafion® 117 was simulated and
studied to verify whether the additive particles affect the formation of the water percolating …

Measurement of apparent diffusion constant on the cross‐section of thin PVA films under a free swelling condition with a facile electronic device

M Gao, X Wan, S Lai, K Hu, X Chen… - Polymers for …, 2022 - Wiley Online Library
The importance of predicting the diffusion coefficient to describe the diffusion process in
glassy polymers is obvious. However, most of the direct measurements of diffusion …

Computational study of microhydration in sulfonated Diels–Alder poly (phenylene) polymers

TM Alam - The Journal of Physical Chemistry A, 2018 - ACS Publications
The nature of microhydration in sulfonated Diels–Alder poly (phenylene)(SDAPP) polymer
membranes is explored using ab initio and density functional theory (DFT) electronic …

NMR spin diffusion measurements in disordered polymers: Insights and limitations

EG Sorte, AL Frischknecht, TM Alam - Physical Review Materials, 2019 - APS
Nuclear magnetic resonance (NMR) spin diffusion measurements have been widely used to
estimate domain sizes in a variety of polymer materials. In cases where the domains are well …