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@ARTICLE{Richter:256354,
author = {Richter, D. and Goossen, Sebastian and Wischnewski, A.},
title = {{C}elebrating {S}oft {M}atter's 10th {A}nniversary:
{T}opology matters: structure and dynamics of ring polymers},
journal = {Soft matter},
volume = {11},
number = {44},
issn = {1744-6848},
address = {London},
publisher = {Royal Soc. of Chemistry},
reportid = {FZJ-2015-06313},
pages = {8535-8549},
year = {2015},
abstract = {Considering topology among all polymer architectures
polymer rings are unique, as they are the simplest closed
structures without ends. In this review we present recent
experimental advances addressing the structure and dynamics
of rings. We focus mainly on neutron scattering results that
reveal experimental insight on a molecular scale. We first
briefly reflect on the progress in ring chemistry that made
the experimental access possible. Structural investigations
characterizing rings as compact objects in the melts are put
into theoretical context. In contrast to the plateau regime
common for all other high molecular weight polymer systems,
the dynamic modulus of pure ring systems is characterized by
a power law decay, while the viscosity displays a much
weaker molecular weight dependence as a corresponding linear
melt. The dynamics of ring melts is uniquely addressed by
neutron spin-echo spectroscopy. The sub-diffusive center of
mass motion at short times agrees well with simulation as
well as theoretical concepts. In the internal dynamics the
basic length scale of the ring molecule, the loop size,
manifests itself clearly. The experiments reveal strong
evidence for loop motions and call for further theoretical
work describing them. Finally, small fractions of ring
molecules in linear melts turn out to be very sensitive
probes in order to scrutinize the dynamics of the host with
the potential to reveal fundamental aspects of the dynamics
of branched polymer systems.},
cin = {ICS-1 / Neutronenstreuung ; JCNS-1 / JCNS (München) ;
Jülich Centre for Neutron Science JCNS (München) ;
JCNS-FRM-II},
ddc = {530},
cid = {I:(DE-Juel1)ICS-1-20110106 / I:(DE-Juel1)JCNS-1-20110106 /
I:(DE-Juel1)JCNS-FRM-II-20110218},
pnm = {551 - Functional Macromolecules and Complexes (POF3-551) /
6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
/ 6215 - Soft Matter, Health and Life Sciences (POF3-621)},
pid = {G:(DE-HGF)POF3-551 / G:(DE-HGF)POF3-6G4 /
G:(DE-HGF)POF3-6215},
experiment = {EXP:(DE-MLZ)J-NSE-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000364824600001},
pubmed = {pmid:26406787},
doi = {10.1039/C5SM01994J},
url = {https://juser.fz-juelich.de/record/256354},
}