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@ARTICLE{Niebuur:867571,
      author       = {Niebuur, Bart-Jan and Lohstroh, Wiebke and Appavou,
                      Marie-Sousai and Schulte, Alfons and Papadakis, Christine
                      M.},
      title        = {{W}ater {D}ynamics in a {C}oncentrated {P}oly( {N}
                      -isopropylacrylamide) {S}olution at {V}ariable {P}ressure},
      journal      = {Macromolecules},
      volume       = {52},
      number       = {5},
      issn         = {1520-5835},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {FZJ-2019-06194},
      pages        = {1942 - 1954},
      year         = {2019},
      abstract     = {Using quasi-elastic neutron scattering (QENS), we study the
                      dynamics of water in a concentrated
                      poly(N-isopropylacrylamide) solution over a large
                      temperature range across the demixing transition at
                      pressures of 0.1 and 130 MPa. The QENS spectra extending in
                      frequency from 1 to 3 × 103 GHz and in momentum transfer
                      from 0.45 to 1.65 Å–1 reveal the relaxation of hydration
                      water as well as multiple dynamic processes in bulk water.
                      At the cloud point, the fraction of hydration water
                      decreases abruptly at 0.1 MPa, whereas at 130 MPa, it
                      decreases smoothly. The susceptibility spectra of hydration
                      water occur at lower frequencies than those of pure water
                      and the dependence of the relaxation times on momentum
                      transfer can be described by a jump-diffusion model. At a
                      pressure of 0.1 MPa, the hydration water remaining in the
                      two-phase region is more constrained than at 130 MPa. We
                      attribute these findings to the pressure-dependent hydration
                      interactions.},
      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)TOF-TOF-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000461532900005},
      doi          = {10.1021/acs.macromol.8b02708},
      url          = {https://juser.fz-juelich.de/record/867571},
}