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@ARTICLE{Lang:857059,
author = {Lang, Christian and Hendricks, Jan and Zhang, Zhenkun and
Reddy, Naveen K. and Rothstein, Jonathan P. and Lettinga, M.
Paul and Vermant, Jan and Clasen, Christian},
title = {{E}ffects of particle stiffness on the extensional rheology
of model rod-like nanoparticle suspensions},
journal = {Soft matter},
volume = {15},
number = {5},
issn = {1744-683X},
address = {London},
publisher = {Royal Soc. of Chemistry},
reportid = {FZJ-2018-06327},
pages = {833-841},
year = {2019},
abstract = {The linear and nonlinear rheological behavior of two
rod-like particle suspensions as a function of concentration
is studied using small amplitude oscillatory shear, steady
shear and capillary breakup extensional rheometry. The
rod-like suspensions are composed of fd virus and its mutant
fdY21M, which are perfectly monodisperse, with a length on
the order of 900 nm. The particles are semiflexible yet
differ in their persistence length. The effect of stiffness
on the rheological behavior in both, shear and extensional
flow, is investigated experimentally. The linear
viscoelastic shear data is compared in detail with
theoretical predictions for worm-like chains. The
extensional properties are compared to Batchelor's theory,
generalized for the shear thinning nature of the
suspensions. Theoretical predictions agree well with the
measured complex moduli at low concentrations as well as the
nonlinear shear and elongational viscosities at high flow
rates. The results in this work provide guidelines for
enhancing the elongational viscosity based on purely
frictional effects in the absence of strong normal forces
which are characteristic for high molecular weight
polymers.},
cin = {ICS-3},
ddc = {530},
cid = {I:(DE-Juel1)ICS-3-20110106},
pnm = {551 - Functional Macromolecules and Complexes (POF3-551)},
pid = {G:(DE-HGF)POF3-551},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30488939},
UT = {WOS:000457540000022},
doi = {10.1039/C8SM01925H},
url = {https://juser.fz-juelich.de/record/857059},
}