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A Facile Method to Prepare Double‐Layer Isoporous Hollow Fiber Membrane by In Situ Hydrogen Bond Formation in the Spinning Line
Author(s) -
Noor Nazia,
Koll Joachim,
Radjabian Maryam,
Abetz Clarissa,
Abetz Volker
Publication year - 2016
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201500593
Subject(s) - materials science , layer (electronics) , spinning , polystyrene , fiber , composite number , scanning electron microscope , double layer (biology) , layer by layer , chemical engineering , composite material , hydrogen bond , polymer chemistry , polymer , molecule , chemistry , organic chemistry , engineering
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.