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@ARTICLE{Radjabian:205657,
      author       = {Radjabian, Maryam and Koll, Joachim and Buhr, Kristian and
                      Vainio, Ulla and Abetz, Clarissa and Handge, Ulrich A. and
                      Abetz, Volker},
      title        = {{T}ailoring the {M}orphology of {S}elf-{A}ssembled {B}lock
                      {C}opolymer {H}ollow {F}iber {M}embranes},
      journal      = {Polymer},
      volume       = {55},
      number       = {13},
      issn         = {0032-3861},
      address      = {Oxford},
      publisher    = {Elsevier Science},
      reportid     = {PUBDB-2015-00217},
      pages        = {2986 - 2997},
      year         = {2014},
      abstract     = {Isoporous asymmetric
                      polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) hollow
                      fiber membraneswere successfully made by a dry-jet wet
                      spinning process. Well-defined nanometer-scale pores
                      around20e40 nm in diameter were tailored on the top surface
                      of the fiber above a non-ordered macroporouslayer by
                      combining block copolymer self-assembly and non-solvent
                      induced phase separation (SNIPS).Uniformity of the
                      surface-assembled pores and fiber cross-section morphology
                      was improved byadjusting the solution concentration, solvent
                      composition as well as some important spinning
                      parameterssuch as bore fluid flow rate, polymer solution
                      flow rate and air gap distance between the spinneretand the
                      precipitation bath. The formation of the well-organized
                      self-assembled pores is a result of theinterplay of fast
                      relaxation of the shear-induced oriented block copolymer
                      chains, the rapid evaporationof the solvent mixture on the
                      outer surface and solvent extraction into the bore liquid on
                      the lumen side,and gravity force during spinning. Structural
                      features of the block copolymer solutions were
                      investigatedby small-angle X-ray scattering (SAXS) and
                      rheological properties of the solutions were examined
                      aswell. The scattering patterns of the optimal solutions for
                      membrane formation indicate a disorderedphase which is very
                      close to the disorder-order transition. The nanostructured
                      surface and cross-sectionmorphology of the membranes were
                      characterized by scanning electron microscopy (SEM). The
                      waterflux of the membranes was measured and gas permeation
                      was examined to test the pressure stability ofthe hollow
                      fibers.},
      cin          = {DOOR / EMBL / EMBL-User},
      ddc          = {540},
      cid          = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)EMBL-20120731 /
                      I:(DE-H253)EMBL-User-20120814},
      pnm          = {DORIS Beamline A2 (POF2-54G13) / PETRA Beamline P12
                      (POF2-54G14)},
      pid          = {G:(DE-H253)POF2-A2-20130405 / G:(DE-H253)POF2-P12-20130405},
      experiment   = {EXP:(DE-H253)D-A2-20150101 / EXP:(DE-H253)P-P12-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000337549000007},
      doi          = {10.1016/j.polymer.2014.04.041},
      url          = {https://bib-pubdb1.desy.de/record/205657},
}