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@ARTICLE{Snijkers:172297,
author = {Snijkers, Frank and Cho, Hong Y. and Nese, Alper and
Matyjaszewski, Krzysztof and Pyckhout-Hintzen, Wim and
Vlassopoulos, Dimitris},
title = {{E}ffects of {C}ore {M}icrostructure on {S}tructure and
{D}ynamics of {S}tar {P}olymer {M}elts: {F}rom {P}olymeric
to {C}olloidal {R}esponse},
journal = {Macromolecules},
volume = {47},
number = {15},
issn = {1520-5835},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2014-05780},
pages = {5347 - 5356},
year = {2014},
abstract = {The structure and linear viscoelastic behavior of four
different model star polymer melts were investigated
experimentally. The star polymers were prepared via
different synthetic routes based on atom transfer radical
polymerization (ATRP). Stars with small elongated (linear
backbone) cores exhibited slight differences in the
asymmetry of the core, which however did not affect the
rheological properties significantly. The relaxation
behavior of these stars with an asymmetric core was
well-described by available tube models. On the other hand,
stars with large cross-linked cores exhibited a core–shell
morphology and their stress relaxation was dominated by a
power-law decay over about 8 decades, akin to gel-like soft
systems. This behavior reflected their liquid-like ordering
and small intercore distances, and bares analogueies to that
of interpenetrating soft colloids and microgels.},
cin = {ICS-1 / Neutronenstreuung ; JCNS-1 / JCNS (München) ;
Jülich Centre for Neutron Science JCNS (München) ;
JCNS-FRM-II},
ddc = {540},
cid = {I:(DE-Juel1)ICS-1-20110106 / I:(DE-Juel1)JCNS-1-20110106 /
I:(DE-Juel1)JCNS-FRM-II-20110218},
pnm = {451 - Soft Matter Composites (POF2-451) / 54G - JCNS
(POF2-54G24)},
pid = {G:(DE-HGF)POF2-451 / G:(DE-HGF)POF2-54G24},
experiment = {EXP:(DE-MLZ)KWS1-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000340350400055},
doi = {10.1021/ma5008336},
url = {https://juser.fz-juelich.de/record/172297},
}