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@ARTICLE{Schwahn:825198,
      author       = {Schwahn, Dietmar and Pipich, Vitaliy},
      title        = {{A}queous {S}olutions of {P}oly(ethylene oxide):
                      {C}rossover from {O}rdinary to {T}ricritical {B}ehavior},
      journal      = {Macromolecules},
      volume       = {49},
      number       = {21},
      issn         = {1520-5835},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {FZJ-2016-07669},
      pages        = {8228 - 8240},
      year         = {2016},
      abstract     = {The aqueous associating solution poly(ethylene oxide) (PEO)
                      of molar mass between 0.45 and 280 kDa was studied with
                      small-angle neutron scattering (SANS) near their critical
                      concentration in a temperature interval from 11.8 to 95.7
                      °C. SANS measures thermal concentration fluctuations whose
                      susceptibility and correlation length identified mean-field,
                      3D-Ising, and tricritical Θ-point critical behavior.
                      Scaling laws of the critical amplitudes of susceptibility
                      and correlation length were observed for the samples obeying
                      3D-Ising and tricritical Θ-point behavior in agreement with
                      the predicted ones for nonassociating semidilute solutions.
                      On the other hand, chain conformation is different for both
                      classes of criticality and is attributed to the concentrated
                      and semidilute regime of the phase diagram. In the
                      concentrated regime the chains are slightly more compacted
                      than Gaussian coils. However, all PEO solutions approach
                      ideal chain conformation at the Θ-temperature. A small
                      amount of PEO of the order of 10–5 is forming compact PEO
                      aggregates.},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106},
      pnm          = {6215 - Soft Matter, Health and Life Sciences (POF3-621) /
                      6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
                      Neutron Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-6215 / G:(DE-HGF)POF3-6G15 /
                      G:(DE-HGF)POF3-6G4},
      experiment   = {EXP:(DE-MLZ)KWS3-20140101 / EXP:(DE-MLZ)KWS1-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000387519200020},
      doi          = {10.1021/acs.macromol.6b01466},
      url          = {https://juser.fz-juelich.de/record/825198},
}