title: A Facile Method to Prepare Double-Layer Isoporous Hollow Fiber Membrane by In Situ Hydrogen Bond Formation in the Spinning Line.
abstract: A double-layer hollow fiber is fabricated where an isoporous surface of polystyrene-block-poly(4-vinylpyridine) is fixed on a support layer by co-extrusion. Due to the sulfonation of the support layer material, delamination of the two layers is suppressed without increasing the number of subsequent processing steps for isoporous composite membrane formation. Electron microscope-energy-dispersive X-ray spectroscopy images unveil the existence of a high sulfur concentration in the interfacial region by which in-process H-bond formation between the layers is evidenced. For the very first time, our study reports a facile method to fabricate a sturdy isoporous double-layer hollow fiber.
authors.affiliation: Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Straße 1, 21502, Geesthacht, Germany.
authors.forename: Nazia
authors.initials: N
authors.lastname: Noor
authors.affiliation: Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Straße 1, 21502, Geesthacht, Germany.
authors.forename: Joachim
authors.initials: J
authors.lastname: Koll
authors.affiliation: Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Straße 1, 21502, Geesthacht, Germany.
authors.forename: Maryam
authors.initials: M
authors.lastname: Radjabian
authors.affiliation: Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Straße 1, 21502, Geesthacht, Germany.
authors.forename: Clarissa
authors.initials: C
authors.lastname: Abetz
authors.affiliation: Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Straße 1, 21502, Geesthacht, Germany.|Institute of Physical Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146, Hamburg, Germany.
authors.forename: Volker
authors.initials: V
authors.lastname: Abetz
mesh_terms: D055664:Electrochemical Techniques; D006860:Hydrogen Bonding; D008567:Membranes, Artificial; D008855:Microscopy, Electron, Scanning; D011137:Polystyrenes / Q000737:chemistry*; D011145:Polyvinyls / Q000737:chemistry*; D016062:Porosity; D011725:Pyridines / Q000737:chemistry*; D013052:Spectrometry, X-Ray Emission; D013455:Sulfur / Q000737:chemistry*
chemical_list: D008567:Membranes, Artificial; D011137:Polystyrenes; D011145:Polyvinyls; D011725:Pyridines; C509607:polystyrene-block-poly(4-vinylpyridine); D013455:Sulfur
keywords: co-extrusion; double-layer hollow fiber; elemental mapping; in situ hydrogen bond formation; sulfonation