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@ARTICLE{Nusser:14021,
      author       = {Nusser, K. and Neueder, S. and Schneider, G.J. and Meyer,
                      M. and Pyckhout-Hintzen, W. and Willner, L. and Radulescu,
                      A. and Richter, D.},
      title        = {{C}onformations of silica-poly(ethylene-propylene)
                      nanocomposites},
      journal      = {Macromolecules},
      volume       = {43},
      issn         = {0024-9297},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {PreJuSER-14021},
      pages        = {9837 - 9847},
      year         = {2010},
      note         = {K.N. gratefully acknowledges the financial support of the
                      Evonik Stiftung.},
      abstract     = {By the use of small angle neutron scattering, the chain
                      conformation in a polymer nanocomposite was studied as a
                      function of the nanoparticle fraction for two different
                      molecular weights. A repulsive system was realized in mixing
                      poly(ethylene-propylene) and hydrophobically modified
                      silica. All nanocomposite SANS data exhibit a pronounced
                      scattering peak at intermediate momentum transfers, which is
                      closely connected with the particle structure. Even under
                      contrast matching conditions, the hydrophobic surface layer
                      of the nanoparticles was found to contribute significantly
                      to the scattering signal. In particular, in the short chain
                      matrix the peak origin is exclusively related to direct
                      particle scattering. In the long chain matrix, an additional
                      peak contribution is present. Possible origins include void
                      correlation scattering or polymer correlation scattering. We
                      show unambiguously that the conformation of short chains
                      with a molecular weight of 3000 g/mol is not visibly
                      disturbed by the presence of the nanoparticles. In contrast
                      to that a polymer matrix with 50 000 g/mol chains is
                      affected by the particle presence. The chain radius of
                      gyration R-g decreases.},
      keywords     = {J (WoSType)},
      cin          = {IFF-4 / IFF-5 / Jülich Centre for Neutron Science JCNS
                      (JCNS) ; JCNS},
      ddc          = {540},
      cid          = {I:(DE-Juel1)VDB784 / I:(DE-Juel1)VDB785 /
                      I:(DE-Juel1)JCNS-20121112},
      pnm          = {BioSoft: Makromolekulare Systeme und biologische
                      Informationsverarbeitung / Großgeräte für die Forschung
                      mit Photonen, Neutronen und Ionen (PNI)},
      pid          = {G:(DE-Juel1)FUEK505 / G:(DE-Juel1)FUEK415},
      experiment   = {EXP:(DE-MLZ)KWS2-20140101},
      shelfmark    = {Polymer Science},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000284967000033},
      doi          = {10.1021/ma101898c},
      url          = {https://juser.fz-juelich.de/record/14021},
}