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@ARTICLE{Klemmer:828853,
      author       = {Klemmer, Helge F. M. and Allgaier, J. and Frielinghaus,
                      Henrich and Holderer, Olaf and Ohl, Michael},
      title        = {{I}nfluence of the amphiphilicity profile of copolymers on
                      the formation of liquid crystalline mesophases in
                      microemulsions},
      journal      = {Colloid $\&$ polymer science},
      volume       = {295},
      number       = {5},
      issn         = {0023-2904},
      address      = {Berlin},
      publisher    = {Springer},
      reportid     = {FZJ-2017-02707},
      pages        = {911–923},
      year         = {2017},
      abstract     = {In bicontinuous microemulsions, the increase of the
                      solubilization capacity of a surfactant, e.g., by the
                      addition of amphiphilic block copolymers (“boosting
                      effect”), is normally accompanied by the formation of
                      liquid crystalline mesophases. We studied a new class of
                      amphiphilic polymers as “boosters,” so-called gradient
                      polymers, with a gradual change from the hydrophilic to the
                      hydrophobic part. Phase diagram measurements and static and
                      quasielastic neutron scattering experiments reveal that the
                      polymers cause a stiffening of the amphiphilic film while
                      simultaneously the saddle splay modulus decreases such that
                      the formation of liquid crystalline mesophases, normally
                      present with diblock polymers as “boosters,” is
                      suppressed, while bicontinuous structures are geometrically
                      favored. In addition, these findings are supported by
                      theoretical calculations following the works of Lipowsky.
                      Hence, gradient amphiphilic polymers not only increase the
                      efficiency of surfactants but simultaneously suppress the
                      formation of liquid crystalline phases thereby greatly
                      increasing their application potential.},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1 /
                      JCNS-SNS},
      ddc          = {540},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)JCNS-SNS-20110128},
      pnm          = {6215 - Soft Matter, Health and Life Sciences (POF3-621) /
                      6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
                      Neutron Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-6215 / G:(DE-HGF)POF3-6G15 /
                      G:(DE-HGF)POF3-6G4},
      experiment   = {EXP:(DE-Juel1)SNS-NSE-20150203 / EXP:(DE-MLZ)KWS1-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000399706800019},
      doi          = {10.1007/s00396-017-4080-2},
      url          = {https://juser.fz-juelich.de/record/828853},
}