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@ARTICLE{Schneider:843893,
      author       = {Schneider, Florian and Balaceanu, Andreea and Di, Zhenyu
                      and Melnichenko, Yuri B. and Allgaier, J. and Pich, Andrij
                      and Schneider, Gerald J. and Richter, Dieter},
      title        = {{I}nternal structure and phase transition behavior of
                      stimuli-responsive microgels in {PEG} melts},
      journal      = {Soft matter},
      volume       = {13},
      number       = {15},
      issn         = {1744-6848},
      address      = {London},
      publisher    = {Royal Soc. of Chemistry},
      reportid     = {FZJ-2018-01420},
      pages        = {2738 - 2748},
      year         = {2017},
      abstract     = {In this work we investigated the behaviour of
                      stimuli-responsive poly(N-vinylcaprolactam) (PVCL) microgels
                      in poly(ethylene glycol) (PEGs) with a linear architecture.
                      We performed small-angle neutron scattering (SANS)
                      experiments at two different microgel concentrations and
                      various temperatures. The results were compared with those
                      on PVCL microgels in water. PVCL in PEG (molecular weight MW
                      = 2 kg mol−1) exhibits a volume phase transition
                      temperature (VPTT) at a temperature between 160 and 180 °C.
                      The diameter of the swollen microgel is only slightly
                      smaller than in water. Furthermore, with increasing
                      molecular weight of the surrounding polymer matrices fewer
                      chains penetrate the microgel particles. In agreement with
                      that, we identify a decreasing diameter with increasing
                      molecular weight. In the short chain polymers up to MW = 3
                      kg mol−1, PVCL is well dispersed in the matrices with only
                      minor signatures of agglomeration. For the well dispersed
                      systems, we find unperturbed chain conformation of the PEG.
                      Our results clearly show that the miscibility of PVCL and
                      PEG disappears in a molecular weight range of 3 to 10 kg
                      mol−1.},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1 /
                      JCNS-2},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)JCNS-2-20110106},
      pnm          = {6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
                      Neutron Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4},
      experiment   = {EXP:(DE-MLZ)KWS1-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:28217774},
      UT           = {WOS:000399386000003},
      doi          = {10.1039/C6SM02501C},
      url          = {https://juser.fz-juelich.de/record/843893},
}