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@ARTICLE{Krakovsk:825202,
      author       = {Krakovský, Ivan and Szekely, Noemi},
      title        = {{SANS} study on the surfactant effect on nanophase
                      separation in epoxy-based hydrogels prepared from
                      α,ω-diamino terminated polyoxypropylene and
                      polyoxyethylene bis(glycidyl ether)},
      journal      = {European polymer journal},
      volume       = {85},
      issn         = {0014-3057},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2016-07673},
      pages        = {452 - 465},
      year         = {2016},
      abstract     = {Effect of a cationic surfactant (myristyltrimethylammonium
                      bromide, C14TAB) on swelling behaviour of epoxy network
                      containing polyoxyethylene (POE) and polyoxypropylene (POP)
                      and structure of resulting hydrogels was studied using
                      small-angle neutron scattering (SANS).Nanophase separated
                      structure of hydrogel prepared by swelling of the network in
                      pure water was revealed. Characteristic length scale of the
                      structure as measured by Bragg’s distance is ca 78 Å. The
                      structure consists of water-poor and water-rich nanodomains
                      separated by a diffuse interface of effective thickness ca 5
                      Å. Presence of the surfactant in swelling solution has a
                      strong effect on swelling behaviour of the epoxy network and
                      structure of resulting hydrogels. At the macroscopic level,
                      both, the swelling degree and surfactant uptake by the
                      network increase considerably with growing surfactant
                      concentration in swelling solution. At the microscopic
                      level, the two-phase nanophase separated structure is
                      preserved, however, it becomes finer as expressed by a
                      continuous decay of Bragg’s distance from 78 Å (in
                      absence of the surfactant) to 61 Å (highest surfactant
                      concentration). Effective thickness of interface varies
                      between ca 3–6 Å. Presence of the surfactant also induces
                      variation of the neutron scattering length density at much
                      longer length scale of ca 200–1200 Å. Strong binding of
                      the surfactant to POP chains in epoxy network is responsible
                      for the effects observed.},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1},
      ddc          = {670},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106},
      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)KWS2-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000390497100039},
      doi          = {10.1016/j.eurpolymj.2016.10.049},
      url          = {https://juser.fz-juelich.de/record/825202},
}