title: Formation of integral asymmetric membranes of AB diblock and ABC triblock copolymers by phase inversion.
abstract: The formation of integral asymmetric membranes from ABC triblock terpolymers by non-solvent-induced phase separation is shown. They are compared with the AB diblock copolymer precursors. Triblock terpolymers of polystyrene-block-poly(2-vinylpyridine)-block-poly(ethylene oxide) (PS-b-P2VP-b-PEO) with two compositions are investigated. The third block supports the formation of a membrane in a case, where the corresponding diblock copolymer does not form a good membrane. In addition, the hydrophilicity is increased by the third block and due to the hydroxyl group the possibility of post-functionalization is given. The morphologies are imaged by scanning electron microscopy. The influence of the PEO on the membrane properties is analyzed by water flux, retention, and dynamic contact angle measurements.
authors: Helmholtz-Zentrum Geesthacht, Institute of Polymer Research, Max-Planck-Str. 1, 21502, Geesthacht, Germany.
authors: Adina
authors: A
authors: Jung
authors: Volkan
authors: V
authors: Filiz
authors: Sofia
authors: S
authors: Rangou
authors: Kristian
authors: K
authors: Buhr
authors: Petra
authors: P
authors: Merten
authors: Janina
authors: J
authors: Hahn
authors: Juliana
authors: J
authors: Clodt
authors: Clarissa
authors: C
authors: Abetz
authors: Volker
authors: V
authors: Abetz
mesh_terms: D057927:Hydrophobic and Hydrophilic Interactions; D008567:Membranes, Artificial; D044367:Phase Transition; D011092:Polyethylene Glycols / Q000138:chemical synthesis* / Q000737:chemistry; D011137:Polystyrenes / Q000138:chemical synthesis* / Q000737:chemistry; D011145:Polyvinyls / Q000138:chemical synthesis* / Q000737:chemistry; D011725:Pyridines / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D008567:Membranes, Artificial; D011137:Polystyrenes; D011145:Polyvinyls; D011725:Pyridines; C569267:polystyrene-block-poly(2-vinylpyridine); D011092:Polyethylene Glycols