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Structure Formation of Integral Asymmetric Composite Membranes of Polystyrene ‐block‐ Poly(2‐vinylpyridine) on a Nonwoven
Author(s) -
Jung Adina,
Rangou Sofia,
Abetz Clarissa,
Filiz Volkan,
Abetz Volker
Publication year - 2012
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201100359
Subject(s) - materials science , phase inversion , copolymer , polystyrene , membrane , scanning electron microscope , polymer chemistry , transmission electron microscopy , solvent , composite number , chemical engineering , composite material , polymer , nanotechnology , chemistry , organic chemistry , biochemistry , engineering
The formation of an integral asymmetric membrane composed of a cylinder‐forming polystyrene ‐block‐ poly(2‐vinylpyridine) on a nonwoven by using solvent casting followed by solvent/nonsolvent exchange (phase inversion) is reported for the first time. The influence of parameters such as solvent composition, evaporation time of the solution‐cast block copolymer film before phase inversion, and immersion bath temperature is demonstrated. The optimized membranes are characterized in terms of stimuli‐responsive water flux properties. The morphologies of the membranes as well as of the bulk of the block copolymer are imaged by scanning force microscopy, scanning electron microscopy, and transmission electron microscopy.