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@ARTICLE{Burckbuchler:57471,
      author       = {Burckbuchler, V. and Kjoeniksen, A.-L. and Galant, C. and
                      Lund, R. and Amiel, C. and Knudsen, K. D. and Nyström, B.},
      title        = {{R}heological and structural characterization of the
                      interactions between cyclodextrin compounds and
                      hydrophobically modified alginate},
      journal      = {Biomacromolecules},
      volume       = {7},
      issn         = {1525-7797},
      address      = {Columbus, Ohio},
      publisher    = {American Chemical Soc.},
      reportid     = {PreJuSER-57471},
      pages        = {1871 - 1878},
      year         = {2006},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Interactions in semidilute solutions of a hydrophobically
                      modified alginate (HM-alginate) in the presence of
                      hydroxypropyl-beta-cyclodextrin (HP-beta-CD) monomer or
                      beta-cyclodextrin polymer (poly(beta-CD)) have been
                      characterized at different temperatures with the aid of
                      rheology and small-angle neutron scattering ( SANS). The
                      viscosity results for the HM-alginate/HP-beta-CD system
                      reveal progressive deactivation of the hydrophobic
                      associations as the concentration of HP-beta-CD increases.
                      For the HM-alginate/poly(beta-CD) system, on the other hand,
                      addition of poly(beta-CD) sets up bridges between adjacent
                      polymer chains and thereby strengthens the associative
                      network. A novel shear-thickening effect is observed at
                      fairly high shear rates for the HM-alginate/ poly(beta-CD)
                      system, and this feature is influenced by temperature.
                      Elevated temperature induces higher chain mobility and the
                      formation of weaker network associations. Analyses of the
                      SANS data disclosed that the association strength in
                      HM-alginate/poly(beta-CD) mixtures increases strongly with
                      increasing cosolute concentration, whereas no effect or a
                      moderate weakening of the strength can be traced in
                      HM-alginate/HP-beta-CD solutions upon addition of
                      HP-beta-CD. The value of the correlation length xi is
                      virtually not affected by the addition of cosolute for the
                      HM-alginate/poly(beta-CD) system, whereas the decoupling of
                      hydrophobic moieties of the polymer upon addition of
                      HP-beta-CD gives rise to a smaller value of xi, suggesting
                      that the size of the heterogeneity patches is reduced. The
                      SANS results suggest that compact association structures are
                      formed in the HM-alginate/poly(beta-CD) solutions.},
      keywords     = {J (WoSType)},
      cin          = {IFF-INS},
      ddc          = {540},
      cid          = {I:(DE-Juel1)VDB341},
      pnm          = {Kondensierte Materie / Großgeräte für die Forschung mit
                      Photonen, Neutronen und Ionen (PNI)},
      pid          = {G:(DE-Juel1)FUEK414 / G:(DE-Juel1)FUEK415},
      shelfmark    = {Biochemistry $\&$ Molecular Biology / Chemistry, Organic /
                      Polymer Science},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000238180600026},
      doi          = {10.1021/bm060149o},
      url          = {https://juser.fz-juelich.de/record/57471},
}