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@ARTICLE{Kyrey:893349,
      author       = {Kyrey, Tetyana and Witte, Judith and Lutzki, Jana and
                      Zamponi, Michaela and Wellert, Stefan and Holderer, Olaf},
      title        = {{M}obility of bound water in {PNIPAM} microgels},
      journal      = {Physical chemistry, chemical physics},
      volume       = {23},
      issn         = {1463-9084},
      address      = {Cambridge},
      publisher    = {RSC Publ.},
      reportid     = {FZJ-2021-02701},
      pages        = {14252-14259},
      year         = {2021},
      abstract     = {Polymer–solvent interactions play a crucial role in the
                      stimuli-responsive behaviour of polymer networks. They
                      influence the swelling/deswelling behaviour as well as the
                      dynamics of the polymer chains. Scattering experiments
                      provide insight into the polymer–water interaction of
                      poly(N-isopropylacrylamide) (PNIPAM) microgels cross-linked
                      with N,N′-methylenebisacrylamide (BIS) in dried and
                      humidified state. The water mobility is studied by means of
                      neutron spin-echo spectroscopy and neutron backscattering
                      spectroscopy. The residual water amount has been determined
                      with Karl Fischer titration. For both degrees of
                      humidification, the relaxation time of the water molecules
                      is much larger than that of free water due to the strong
                      interactions with the polymer network and is only weakly
                      depending on temperature and length scale of observation.
                      The possible influence of the water on methyl group
                      rotations is discussed},
      cin          = {JCNS-FRM-II / MLZ / JCNS-4 / JCNS-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3 /
                      I:(DE-Juel1)JCNS-4-20201012 / I:(DE-Juel1)JCNS-1-20110106},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
                      (POF4-6G4) / 632 - Materials – Quantum, Complex and
                      Functional Materials (POF4-632) / DFG project 290879244 -
                      Grenzflächennahe Dynamik nicht quervernetzter und
                      quervernetzter Polymerarchitekturen auf festen planaren
                      Oberflächen},
      pid          = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632 /
                      G:(GEPRIS)290879244},
      experiment   = {EXP:(DE-MLZ)J-NSE-20140101 / EXP:(DE-MLZ)SPHERES-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {34159987},
      UT           = {WOS:000664676800001},
      doi          = {10.1039/D1CP01823J},
      url          = {https://juser.fz-juelich.de/record/893349},
}