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@ARTICLE{Kaneko:819432,
author = {Kaneko, Fumitoshi and Seto, Naoki and Sato, Shuma and
Radulescu, Aurel and Schiavone, Maria Maddalena and
Allgaier, J. and Ute, Koichi},
title = {{S}imultaneous small-angle neutron scattering and {F}ourier
transform infrared spectroscopic measurements on cocrystals
of syndiotactic polystyrene with polyethylene glycol
dimethyl ethers},
journal = {Journal of applied crystallography},
volume = {49},
number = {5},
issn = {0021-8898},
address = {Copenhagen},
publisher = {Munksgaard},
reportid = {FZJ-2016-05096},
pages = {1420 - 1427},
year = {2016},
abstract = {Syndiotactic polystyrene (sPS) is a crystalline polymer
which has a unique property; it is able to form cocrystals
with a wide range of chemical compounds, in which the guest
molecules are confined in the vacancies of the host sPS
crystalline region. Recently, it has been found that even
polyethylene glycol oligomers with a molecular weight of
more than several hundreds can be introduced into the sPS
crystalline region. It is quite important to know how such a
long-chain molecule is stored in the host sPS lattice. To
tackle this issue, a new simultaneous measurement method
combing small-angle neutron scattering and Fourier transform
infrared spectroscopy (SANS/FTIR), which has been recently
developed by the authors, was applied to an sPS cocrystal
with polyethylene glycol dimethyl ether with a molecular
weight of 500 (PEGDME500). The temperature-dependent changes
of the SANS profile and FTIR spectrum were followed from
room temperature up to 413 K for a one-dimensionally
oriented SANS/PEGDME500 cocrystal sample. The intensity of
the reflections due to the stacking of crystalline lamellae
showed a significant temperature dependence. The
two-dimensional pattern in the high Q region of SANS also
changed depending on temperature. The combined information
obtained by SANS and FTIR suggested that PEGDME500 molecules
are distributed in both the crystalline and amorphous
regions in the low-temperature region close to room
temperature, but they are predominantly included in the
amorphous region in the high-temperature region. It was also
suggested by the two-dimensional SANS profile that PEGDME500
molecules in the crystalline region have an elongated
structure along the thickness direction of the crystalline
lamellae.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1},
ddc = {540},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106},
pnm = {6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
/ 6G15 - FRM II / MLZ (POF3-6G15)},
pid = {G:(DE-HGF)POF3-6G4 / G:(DE-HGF)POF3-6G15},
experiment = {EXP:(DE-MLZ)KWS2-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000388354800004},
pubmed = {pmid:27738412},
doi = {10.1107/S160057671601178X},
url = {https://juser.fz-juelich.de/record/819432},
}