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@ARTICLE{Zhao:892627,
author = {Zhao, Yue and Yoshimura, Kimio and Motegi, Toshinori and
Hiroki, Akihiro and Radulescu, Aurel and Maekawa, Yasunari},
title = {{T}hree-{C}omponent {D}omains in the {F}ully {H}ydrated
{N}afion {M}embrane {C}haracterized by {P}artial
{S}cattering {F}unction {A}nalysis},
journal = {Macromolecules},
volume = {54},
number = {9},
issn = {1520-5835},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2021-02216},
pages = {4128 - 4135},
year = {2021},
abstract = {A fully hydrated Nafion membrane is generally treated as a
three-component system comprising the
tetrafluoroethylene-like main chain, the fluorinated side
chain ending with a sulfonic acid group, and absorbed water.
We applied the contrast variation small-angle neutron
scattering technique to decompose scattering intensity
profiles to partial scattering functions (PSFs) of each
component in Nafion quantitatively. In the large scale (>30
nm), structural heterogeneities were observed in the main-
and side-chain domains but not in water domains. In the
middle scale (5–30 nm), a bicontinuous-like structure of
crystalline and amorphous phases with a mean separation
distance of 11 nm was observed, as a result of the
main-chain semicrystalline templating effect. In the small
scale (<5 nm), another bicontinuous-like structure exists in
the amorphous phase with a mean separation distance of about
4 nm, indicating a well-connected water network responsible
for the good membrane conductivity. Cross-term analysis of
PSFs for two components suggested the location of each
component that the main-chain domains tends to
phase-separate from either the side-chain or water domains,
but the side-chain and water domains are closely attached
through sulfonic acid groups.},
cin = {JCNS-FRM-II / MLZ / JCNS-1},
ddc = {540},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3 /
I:(DE-Juel1)JCNS-1-20110106},
pnm = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
(POF4-6G4)},
pid = {G:(DE-HGF)POF4-6G4},
experiment = {EXP:(DE-MLZ)KWS2-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000651530900019},
doi = {10.1021/acs.macromol.1c00587},
url = {https://juser.fz-juelich.de/record/892627},
}