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@INPROCEEDINGS{Schiavone:279002,
author = {Schiavone, Maria Maddalena and Radulescu, Aurel and
Tarallo, O and Di Girolamo, R. and Caporaso, L. and Revay,
Z. and Richter, Dieter},
title = {{M}icrostructural characterization of {PEM}s based on
sulfonated syndiotactic polystyrene in the delta-clathrate
and gamma phases},
reportid = {FZJ-2015-07172},
year = {2015},
abstract = {Syndiotactic polystyrene (s-PS) is able to form different
kinds of co-crystalline phases with guest molecules of
various size, shape and property. Several advanced materials
have been produced starting from s-PS co-crystalline films
[1-2]. In particular, sulfonated s-PS (s-SPS) can be used as
proton-conductive membrane for fuel cells, as it presents
high proton conductivity (comparable with Nafion). Besides,
it shows a high chemical and thermo-mechanical stability and
a low cost [3]. The morphology of different s-PS clathrates
and the structural behavior of s-SPS upon hydration can be
more thoroughly understood by combining X-rays scattering
and FT-IR with SANS [4]. 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, the stretching of films leads to occurrence and
distribution of scattering features from typical
morphologies on specific directions and sectors of detection
plan, which enables an accurate structural study of such
complex polymeric systems. A complete SANS investigation on
s-PS samples, starting from their crystallization with guest
molecules to the subsequent sulfonation and hydration, was
performed at SANS diffractometer KWS2 of MLZ. This
experimental analysis has highlighted that the morphology of
these polymeric films is characterized by hydrated channels
in the amorphous phase alternated to staples of crystalline
lamellae, along the stretching direction.[1]. J.
Schellenberg in “Syndiotactic Polystyrene’’, John
Wiley $\&$ Sons, Inc. 2010. [2]. G. Guerra et al., J. of
Pol. Sci. B, Polymer Physics 2012, 50, 305.[3]. G. Fasano et
al., Int. Journal. of Hydrogen Energy 2013, 36, 8038.[4]. F.
Kaneko et al., Polymer 2013, 54, 3145 and Chemistry Letters,
2015, Accepted.},
month = {Jun},
date = {2015-06-21},
organization = {European Polymer Congress 2015,
Dresden (Germany), 21 Jun 2015 - 26 Jun
2015},
subtyp = {Other},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1},
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) / 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)POF3-6G15 / G:(DE-HGF)POF3-6G4},
experiment = {EXP:(DE-MLZ)KWS2-20140101 / EXP:(DE-MLZ)PGAA-20140101},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/279002},
}