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@ARTICLE{Smith:903633,
      author       = {Smith, Gregory N. and Brok, Erik and Schmiele, Martin and
                      Mortensen, Kell and Bouwman, Wim G. and Duif, Chris P. and
                      Hassenkam, Tue and Alm, Martin and Thomsen, Peter and
                      Arleth, Lise},
      title        = {{T}he microscopic distribution of hydrophilic polymers in
                      interpenetrating polymer networks ({IPN}s) of medical grade
                      silicone},
      journal      = {Polymer},
      volume       = {224},
      issn         = {0032-3861},
      address      = {Oxford},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2021-05282},
      pages        = {123671 -},
      year         = {2021},
      abstract     = {By introducing hydrophilic polymers into silicone medical
                      devices, highly beneficial biomedical properties can be
                      realized. An established solution to introduce hydrophilic
                      polymers is to form an interpenetrating polymer network
                      (IPN) by performing the hydrogel synthesis in the presence
                      of silicone swollen in supercritical carbon dioxide. The
                      precise distribution of the two polymers is not known, and
                      determining this is the goal of this study. Neutron
                      scattering and microscopy were used to determine the
                      distribution of the hydrophilic guest polymer. Atomic force
                      microscopy revealed that the important length scale on the
                      surface of these materials is 10–100 nm, and spin-echo
                      small-angle neutron scattering (SESANS) on IPNs submerged in
                      D2O revealed structures of the same scale within the
                      interior and enabled quantification of their size. SESANS
                      with hydration by D2O proved to be the only scattering
                      technique that could determine the structure of the bulk of
                      these types of materials, and it should be used as an
                      important tool for characterizing polymer medical devices.},
      cin          = {JCNS-FRM-II / JCNS-4 / MLZ},
      ddc          = {540},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-4-20201012 / I:(DE-588b)4597118-3},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
                      (POF4-6G4)},
      pid          = {G:(DE-HGF)POF4-6G4},
      experiment   = {EXP:(DE-MLZ)KWS2-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000646249600004},
      doi          = {10.1016/j.polymer.2021.123671},
      url          = {https://juser.fz-juelich.de/record/903633},
}