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@ARTICLE{Scotti:874168,
      author       = {Scotti, Andrea and Brugnoni, Monia and G. Lopez, Carlos and
                      Bochenek, Steffen and Crassous, Jérôme J. and Richtering,
                      Walter},
      title        = {{F}low properties reveal the particle-to-polymer transition
                      of ultra-low crosslinked microgels},
      journal      = {Soft matter},
      volume       = {16},
      number       = {3},
      issn         = {1744-6848},
      address      = {London},
      publisher    = {Royal Soc. of Chemistry},
      reportid     = {FZJ-2020-01268},
      pages        = {668 - 678},
      year         = {2020},
      note         = {Kein Post-print verfügbar},
      abstract     = {Exploiting soft, adaptive microgels as building blocks for
                      soft materials with controlled and predictable viscoelastic
                      properties is of great interest for both industry and
                      fundamental research. Here the flow properties of different
                      poly(N-isopropylacrylamide) (pNIPAM) microgels are compared:
                      regularly crosslinked versus ultra-low crosslinked (ULC)
                      microgels. The latter are the softest microgels that can be
                      produced via precipitation polymerization. The viscosity of
                      ULC microgel suspensions at low concentrations can be
                      described with models typically used for hard spheres and
                      regularly crosslinked microgels. In contrast, at higher
                      concentrations, ULC microgels show a much softer behavior
                      compared to regularly crosslinked microgels. The increase of
                      the storage modulus with concentration discloses that while
                      for regularly crosslinked microgels the flow properties are
                      mainly determined by the more crosslinked core, for ULC
                      microgels the brush-like interaction is dominant at high
                      packing fractions. Both the flow curves and the increase of
                      the storage modulus with concentration indicates that ULC
                      microgels can form glass and even reach an apparent jammed
                      state despite their extreme softness. In contrast, the
                      analysis of oscillatory frequency sweep measurements show
                      that when approaching the glass transition the ultra-low
                      crosslinked microgels behave as the regularly crosslinked
                      microgels. This is consistent with a recent study showing
                      that in this concentration range the equilibrium phase
                      behavior of these ULC microgels is the one expected for
                      regularly crosslinked microgels.},
      cin          = {IHRS-BioSoft / ICS-2 / IBI-5 / JCNS-FRM-II / MLZ},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IHRS-BioSoft-20161118 /
                      I:(DE-Juel1)ICS-2-20110106 / I:(DE-Juel1)IBI-5-20200312 /
                      I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3},
      pnm          = {899 - ohne Topic (POF3-899) / 6G4 - Jülich Centre for
                      Neutron Research (JCNS) (POF3-623) / 6G15 - FRM II / MLZ
                      (POF3-6G15) / IHRS-BioSoft - International Helmholtz
                      Research School of Biophysics and Soft Matter
                      (IHRS-BioSoft-20061101)},
      pid          = {G:(DE-HGF)POF3-899 / G:(DE-HGF)POF3-6G4 /
                      G:(DE-HGF)POF3-6G15 / G:(DE-Juel1)IHRS-BioSoft-20061101},
      experiment   = {EXP:(DE-MLZ)KWS2-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {31815271},
      UT           = {WOS:000508850300007},
      doi          = {10.1039/C9SM01451A},
      url          = {https://juser.fz-juelich.de/record/874168},
}