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@ARTICLE{Schiavone:844928,
author = {Schiavone, Maria Maddalena and Tarallo, O. and Di Girolamo,
R. and Caporaso, L. and Appavou, Marie-Sousai and Revay, Z.
and Radulescu, Aurel},
title = {{S}tructure and morphology of model polymer electrolyte
membranes based on sulfonated syndiotactic-polystyrene in
the δ co-crystalline phase resolved by small-angle neutron
scattering},
journal = {Solid state ionics},
volume = {320},
issn = {0167-2738},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2018-02270},
pages = {392 - 406},
year = {2018},
abstract = {Syndiotactic polystyrene (s-PS) is able to form different
kinds of co-crystalline phases with guest molecules of
different size, shape and property. Several advanced
materials have been produced starting from s-PS
co-crystalline films. In particular, sulfonated s-PS (s-sPS)
can be used as proton-conductive membrane in some fuel cells
applications, as it presents high proton conductivity
(comparable with Nafion). Besides, it shows a high chemical
and thermo-mechanical stability and a low cost. The
morphology of different s-PS clathrates and the structural
behavior of s-sPS upon hydration can be thoroughly
understood by SANS. In fact, exploiting the neutron contrast
variation between various hydrogenated and deuterated
components of s-PS and s-sPS clathrates, additional and
unique information about the distribution of guest molecules
in the crystalline and amorphous regions and about the
hydrated domains of the polymer were obtained. Moreover,
using uni-axially deformed films the occurrence and
distribution of scattering features from typical
morphologies on specific directions and sectors of detection
plan enable an accurate structural study of such complex
polymeric systems. We report in the present paper a detailed
SANS investigation of s-PS films, starting from their
crystallization with guest molecules to the subsequent
sulfonation and hydration. FT-IR, neutron PGAA, WAXD and
cryo-TEM were used complementary to SANS to check the state
of the samples after each step of the treatment process and
to obtain additional structural information as support for
the understanding of the SANS data. The current experimental
analysis has highlighted that the morphology of these
polymeric films is characterized by hydrated channels in the
bulk amorphous phase alternated to stacks of crystalline
lamellae, oriented along the stretching direction.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106},
pnm = {144 - Controlling Collective States (POF3-144) / 6213 -
Materials and Processes for Energy and Transport
Technologies (POF3-621) / 6215 - Soft Matter, Health and
Life Sciences (POF3-621) / 6G15 - FRM II / MLZ (POF3-6G15) /
6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)},
pid = {G:(DE-HGF)POF3-144 / G:(DE-HGF)POF3-6213 /
G:(DE-HGF)POF3-6215 / G:(DE-HGF)POF3-6G15 /
G:(DE-HGF)POF3-6G4},
experiment = {EXP:(DE-MLZ)KWS2-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000436219600050},
doi = {10.1016/j.ssi.2018.03.022},
url = {https://juser.fz-juelich.de/record/844928},
}