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@ARTICLE{Gambino:884057,
      author       = {Gambino, Thomas and Shafqat, Numera and Alegría, Angel and
                      Malicki, Nicolas and Dronet, Séverin and Radulescu, Aurel
                      and Nemkovskiy, Kirill and Arbe, Arantxa and Colmenero,
                      Juan},
      title        = {{C}oncentration {F}luctuations and {N}anosegregation in a
                      {S}implified {I}ndustrial {B}lend with {L}arge {D}ynamic
                      {A}symmetry},
      journal      = {Macromolecules},
      volume       = {53},
      number       = {16},
      issn         = {1520-5835},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {FZJ-2020-03068},
      pages        = {7150 - 7160},
      year         = {2020},
      abstract     = {Applying small-angle neutron scattering (SANS) on
                      isotopically labeled samples, we have characterized the
                      thermally driven concentration fluctuations (TCFs), one of
                      the main factors in the phenomenology of blend dynamics, in
                      mixtures of styrene–butadiene rubber (SBR) and oligomers
                      of polystyrene (PS) with different compositions. This system
                      displays a large dynamic asymmetry and is thus a good model
                      to explore the tunability of properties of interest in the
                      rubber industry. The SANS experiments, complemented with
                      neutron diffraction with polarization analysis, have allowed
                      one to determine the UCST behavior of the blend and
                      establish its phase diagram. We find a close vicinity of the
                      spinodal and vitrification lines for intermediate
                      concentrations and samples rich in PS. This induces the
                      freezing of the correlation length for TCF when decreasing
                      the temperature and also has an impact on the reported
                      dielectric response of these mixtures. Furthermore, we have
                      deduced the relevant length scale for segmental relaxation
                      from the comparison of SANS and dielectric results. The
                      values found (≈1.5–2 nm) are close to the Kuhn lengths
                      of the components. The relevance of nanometric length scales
                      in this system could also be tentatively attributed to an
                      underlying nanodomain structure associated with the
                      segregation of phenyl rings and main chains, supported by
                      complementary X-ray diffraction experiments.},
      cin          = {JCNS-FRM-II / JCNS-1 / MLZ},
      ddc          = {540},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106 / I:(DE-588b)4597118-3},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
                      / 6G15 - FRM II / MLZ (POF3-6G15)},
      pid          = {G:(DE-HGF)POF3-6G4 / G:(DE-HGF)POF3-6G15},
      experiment   = {EXP:(DE-MLZ)DNS-20140101 / EXP:(DE-MLZ)KWS2-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000566339100036},
      doi          = {10.1021/acs.macromol.0c01376},
      url          = {https://juser.fz-juelich.de/record/884057},
}