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@ARTICLE{Egger:154441,
      author       = {Egger, H. and Findenegg, G. H. and Holderer, O. and Biehl,
                      R. and Monkenbusch, M. and Hellweg, T.},
      title        = {{B}ending elastic properties of a block copolymer-rich
                      lamellar phase doped by a surfactant: a neutron spin-echo
                      study},
      journal      = {Soft matter},
      volume       = {10},
      number       = {36},
      issn         = {1744-6848},
      address      = {Cambridge},
      publisher    = {Royal Society of Chemistry (RSC)},
      reportid     = {FZJ-2014-03788},
      pages        = {6926-6930},
      year         = {2014},
      abstract     = {The influence of the short alkyl-chain ionic surfactant
                      OTAB on the dynamic behavior of an inverse block
                      copolymer-rich lamellar phase was investigated by neutron
                      spin-echo spectroscopy (NSE). The observed intermediate
                      scattering function can be described by a sum of two
                      contributions. For high scattering vectors the model of
                      Zilman–Granek plus a slow diffusional mode can be used to
                      describe the experimental data and the bending elastic
                      modulus κ for a polymer-rich membrane is calculated. At low
                      scattering vectors the relaxation curves are strongly
                      influenced by de Gennes narrowing arising from the structure
                      factor of the Lα phase. Hence, the computed relaxation
                      rates in this q-range are inversely proportional to the
                      static structure factor. The present study demonstrates the
                      necessity to directly investigate the dynamic behavior of
                      lamellar phases and that an analysis of the width of the
                      Bragg peaks can be insufficient to derive information about
                      the single membrane elasticity, especially when both κ and
                      [B with combining macron] depend on the composition of the
                      membrane.},
      cin          = {Neutronenstreuung ; JCNS-1 / JCNS (München) ; Jülich
                      Centre for Neutron Science JCNS (München) ; JCNS-FRM-II /
                      ICS-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-1-20110106 /
                      I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)ICS-1-20110106},
      pnm          = {451 - Soft Matter Composites (POF2-451) / 54G - JCNS
                      (POF2-54G24)},
      pid          = {G:(DE-HGF)POF2-451 / G:(DE-HGF)POF2-54G24},
      experiment   = {EXP:(DE-MLZ)J-NSE-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000341025700006},
      doi          = {10.1039/c4sm00494a},
      url          = {https://juser.fz-juelich.de/record/154441},
}