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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},
}