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@ARTICLE{Gold:861548,
author = {Gold, Barbara and Pyckhout-Hintzen, W. and Wischnewski, A.
and Radulescu, A. and Monkenbusch, M. and Allgaier, J. and
Hoffmann, I. and Parisi, D. and Vlassopoulos, D. and
Richter, D.},
title = {{D}irect {A}ssessment of {T}ube {D}ilation in {E}ntangled
{P}olymers},
journal = {Physical review letters},
volume = {122},
number = {8},
issn = {1079-7114},
address = {College Park, Md.},
publisher = {APS},
reportid = {FZJ-2019-01999},
pages = {088001},
year = {2019},
abstract = {A key ingredient within theories focusing on the rheology
of entangled polymers is the way how the topological
constraints of an entangled chain are lifted by
unconstrained segments, i.e., how the constraining tube is
dilated. This important question has been addressed by
directly measuring the tube diameter d at the scale of the
tube by neutron spin echo spectroscopy. The tube diameter d
and plateau modulus G0N of highly entangled polyethylene
oxide (PEO) chains of volume fraction c that are diluted by
low molecular PEO show a concentration dependence d∝ca/2
and G0N∝c1+a with an exponent a close to 4/3. This result
allows the clear discrimination between different
theoretical models that predict 4/3 or other values between
1 and 2 and provides an important ingredient to tube model
theories.},
cin = {JCNS-FRM-II / Neutronenstreuung ; JCNS-1 / JCNS-2},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)JCNS-2-20110106},
pnm = {6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
/ 6215 - Soft Matter, Health and Life Sciences (POF3-621)},
pid = {G:(DE-HGF)POF3-6G4 / G:(DE-HGF)POF3-6215},
experiment = {EXP:(DE-MLZ)KWS2-20140101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30932610},
UT = {WOS:000459919700011},
doi = {10.1103/PhysRevLett.122.088001},
url = {https://juser.fz-juelich.de/record/861548},
}