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@ARTICLE{Schmid:276449,
      author       = {Schmid, Andreas J. and Schroeder, Ricarda and Eckert,
                      Thomas and Radulescu, Aurel and Pich, Andrij and Richtering,
                      Walter},
      title        = {{S}ynthesis and solution behaviour of stimuli-sensitive
                      zwitterionic microgels},
      journal      = {Colloid $\&$ polymer science},
      volume       = {293},
      number       = {11},
      issn         = {1435-1536},
      address      = {Berlin},
      publisher    = {Springer},
      reportid     = {FZJ-2015-06888},
      pages        = {3305 - 3318},
      year         = {2015},
      abstract     = {In this study, we have synthesised small aqueous
                      zwitterionic microgels as model systems for amphoteric
                      microgels. Zwitterions exhibit special behaviour due to
                      defined distance between the opposite charges and provide a
                      possibility to incorporate an identical number of positive
                      and negative charges in microgels. Microgels decorated with
                      zwitterionic groups exhibit unique properties compared with
                      their analogues functionalized with separately incorporated
                      oppositely charged co-monomers. In this work, two series of
                      zwitterionic microgels with N-isopropylacrylamide (NIPAm)
                      and N-vinylcaprolactam (VCL) as main monomers and various
                      amounts of
                      [3-(methacryloylamino)propyl]dimethyl(3-sulfopropyl)
                      ammonium hydroxide (referred to as sulfobetaine) as
                      zwitterionic co-monomer have been prepared. We investigated
                      the effect of zwitterionic co-monomer content on the
                      swelling behaviour, particle size, size distribution and
                      volume phase transition temperature of the
                      NIPAm-co-sulfobetaine microgels using various scattering
                      methods, as dynamic and static light scattering and
                      small-angle X-ray/neutron scattering. We found a decrease of
                      particle size with the amount of sulfobetaine in the
                      presence of sodium dodecylsulfate, which is contrary to
                      results published earlier by Das et al. (Chem Mater 20:
                      7157–7163, 2008) for a similar system of zwitterionic
                      microgels. The decrease of particle size is related to
                      co-surfactant behaviour of sulfobetaine in mixtures with
                      sodium dodecylsulfate. The incorporation of sulfobetaine
                      also increases the polydispersity of the microgels and
                      broadens the volume phase transition.},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; JCNS-FRM-II},
      ddc          = {540},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218},
      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},
      UT           = {WOS:000365308400022},
      doi          = {10.1007/s00396-015-3749-7},
      url          = {https://juser.fz-juelich.de/record/276449},
}