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@ARTICLE{Taslimi:171705,
author = {Taslimi, Farzaneh and Gompper, Gerhard and Winkler, Roland
G.},
title = {{S}caffold {S}tructures by {T}elechelic {R}odlike
{P}olymers: {N}onequilibrium {S}tructural and {R}heological
{P}roperties under {S}hear {F}low},
journal = {Macromolecules},
volume = {47},
number = {19},
issn = {0024-9297},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2014-05274},
pages = {6946-6954},
year = {2014},
abstract = {The nonequilibrium structural and rheological properties of
suspension of rodlike polymers with attractive ends are
investigated by mesoscale hydrodynamic simulations. The
hybrid simulation approach combines the multiparticle
collision dynamics method for the fluid with molecular
dynamics simulations for the polymers. In equilibrium, the
rodlike polymers self-organize into scaffold-like network
structures above a critical density and attraction strength.
Shear flow induces significant structural changes. We
identify three major regimes. At low Weissenberg numbers,
the scaffold structure is compactified accompanied by a
phase separation into a fluid domain and a dense
scaffold-like structure. The shear viscosity shows a
Newtonian plateau, which is determined by the fluid layer.
At intermediated shear rates, shear bands appear with
bundles of polymers. Again, we observe a nearly Newtonian
viscosity regime governed by the fluid bands. At high shear
rates, any structure is dissolved and a paranematic phase
appears, with rods well aligned with the flow, and shear
thinning appears.},
cin = {IAS-2 / ICS-2},
ddc = {540},
cid = {I:(DE-Juel1)IAS-2-20090406 / I:(DE-Juel1)ICS-2-20110106},
pnm = {451 - Soft Matter Composites (POF2-451)},
pid = {G:(DE-HGF)POF2-451},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000343196200046},
doi = {10.1021/ma501215t},
url = {https://juser.fz-juelich.de/record/171705},
}