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Ion‐selective Membranes Prepared Upon Layer‐by‐Layer Assembly of Azamacrocycles and Polyelectrolytes
Author(s) -
Hoffmann Kristina,
ElHashani Ashraf,
Tieke Bernd
Publication year - 2010
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201050104
Subject(s) - membrane , polyelectrolyte , nanofiltration , chemical engineering , divalent , reverse osmosis , layer (electronics) , protonation , chemistry , layer by layer , polymer chemistry , ion , chromatography , materials science , organic chemistry , polymer , biochemistry , engineering
Summary : Recent studies on ion transport across multilayered membranes of azamacrocycles and polyelectrolytes are reviewed. Membranes were built up on porous PAN/PET supports using electrostatic layer‐by‐layer assembly. Two types of separation membranes were prepared, type I consisting of protonated hexaazacyclooctadecane and polyvinylsulfate, and type II of hexaazacyclo‐octadecane hexaacetic acid and protonated polyvinylamine. Ion transport was studied under dialysis, nanofiltration and reverse osmosis conditions. Type I membranes were suitable for efficient separation of mono‐ and divalent anions, whereas type II membranes were suited for separation of mono‐ from di‐ and trivalent cations.