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@ARTICLE{Kyrey:864692,
      author       = {Kyrey, Tetyana and Witte, Judith and Feoktystov, Artem and
                      Pipich, Vitaliy and Wu, Baohu and Pasini, Stefano and
                      Radulescu, Aurel and Witt, Marcus U. and Kruteva, Margarita
                      and von Klitzing, Regine and Wellert, Stefan and Holderer,
                      Olaf},
      title        = {{I}nner structure and dynamics of microgels with low and
                      medium crosslinker content prepared via surfactant-free
                      precipitation polymerization and continuous monomer feeding
                      approach},
      journal      = {Soft matter},
      volume       = {15},
      number       = {32},
      issn         = {1744-6848},
      address      = {London},
      publisher    = {Royal Soc. of Chemistry},
      reportid     = {FZJ-2019-04386},
      pages        = {6536 - 6546},
      year         = {2019},
      abstract     = {The preparation of poly(N-isopropylacrylamide) microgels
                      via classical precipitation polymerization (batch method)
                      and a continuous monomer feeding approach (feeding method)
                      leads to different internal crosslinker distributions, i.e.,
                      from core–shell-like to a more homogeneous one. The
                      internal structure and dynamics of these microgels with low
                      and medium crosslinker concentrations are studied with
                      dynamic light scattering and small-angle neutron scattering
                      in a wide q-range below and above the volume phase
                      transition temperature. The influence of the preparation
                      method, and crosslinker and initiator concentration on the
                      internal structure of the microgels is investigated. In
                      contrast to the classical conception where polymer microgels
                      possess a core–shell structure with the averaged internal
                      polymer density distribution within the core part, a
                      detailed view of the internal inhomogeneities of the PNIPAM
                      microgels and the presence of internal domains even above
                      the volume phase transition temperature, when polymer
                      microgels are in the deswollen state, are presented. The
                      correlation between initiator concentration and the size of
                      internal domains that appear inside the microgel with
                      temperature increase is demonstrated. Moreover, the
                      influence of internal inhomogeneities on the dynamics of the
                      batch- and feeding-microgels studied with neutron spin-echo
                      spectroscopy is reported.},
      cin          = {JCNS-FRM-II / JCNS-1 / MLZ},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106 / I:(DE-588b)4597118-3},
      pnm          = {6215 - Soft Matter, Health and Life Sciences (POF3-621) /
                      6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-6215 / G:(DE-HGF)POF3-6G4},
      experiment   = {EXP:(DE-MLZ)KWS1-20140101 / EXP:(DE-MLZ)KWS2-20140101 /
                      EXP:(DE-MLZ)KWS3-20140101 / EXP:(DE-MLZ)J-NSE-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:31355828},
      UT           = {WOS:000481424100008},
      doi          = {10.1039/C9SM01161G},
      url          = {https://juser.fz-juelich.de/record/864692},
}