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@ARTICLE{Bras:17169,
author = {Bras, A.R. and Pasquino, R. and Koukoulas, T. and Tsolou,
G. and Holderer, O. and Radulescu, A. and Allgaier, J. and
Mavrantzas, V. and Pykchout-Hintzen, W. and Wischnewski, A.
and Vlassopoulos, D.},
title = {{S}tructure and {D}ynamics of {P}olymer {R}ings by
{N}eutron {S}cattering: {B}reakdown of the {R}ouse {M}odel},
journal = {Soft matter},
volume = {7},
issn = {1744-683X},
address = {Cambridge},
publisher = {Royal Society of Chemistry (RSC)},
reportid = {PreJuSER-17169},
pages = {11169 - 11176},
year = {2011},
note = {The authors thank T. Chang (Pohang University of Science
and Technology, South Korea) for the LCCC analysis. The
authors acknowledge EU for funding through the ITN-214627
(DYNACOP). ARB and RP acknowledge DYNACOP for a post-doc
grant.},
abstract = {We present a static and quasi-elastic neutron scattering
study on both the structure and dynamics of a ring polymer
in a ring and linear polymer melt, respectively. In the
first case, the ring structure proved to be significantly
more compact compared to the linear chain with the same
molecular weight. In the mixture, the ring molecules swell
as was confirmed by small angle neutron scattering ( SANS)
in accordance with both theory and simulation work. The
dynamical behavior of both systems, which for the first time
has been explored by neutron spin echo spectroscopy (NSE),
shows a surprisingly fast center of mass diffusion as
compared to the linear polymer. These results agree
qualitatively with the presented atomistic MD simulations.
The fast diffusion turned out to be an explicit violation of
the Rouse model.},
keywords = {J (WoSType)},
cin = {ICS-1 / JCNS (München) ; Jülich Centre for Neutron
Science JCNS (München) ; JCNS-FRM-II / JCNS-1},
ddc = {530},
cid = {I:(DE-Juel1)ICS-1-20110106 /
I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106},
pnm = {BioSoft: Makromolekulare Systeme und biologische
Informationsverarbeitung / Großgeräte für die Forschung
mit Photonen, Neutronen und Ionen (PNI)},
pid = {G:(DE-Juel1)FUEK505 / G:(DE-Juel1)FUEK415},
experiment = {EXP:(DE-MLZ)J-NSE-20140101 / EXP:(DE-MLZ)KWS2-20140101},
shelfmark = {Chemistry, Physical / Materials Science, Multidisciplinary
/ Physics, Multidisciplinary / Polymer Science},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000297029500018},
doi = {10.1039/c1sm06257c},
url = {https://juser.fz-juelich.de/record/17169},
}