Premium
Temperature‐Modulated Water Filtration Using Microgel‐Functionalized Hollow‐Fiber Membranes
Author(s) -
Menne Daniel,
Pitsch Fee,
Wong John E.,
Pich Andrij,
Wessling Matthias
Publication year - 2014
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201400316
Subject(s) - membrane , filtration (mathematics) , ultrafiltration (renal) , materials science , chemical engineering , permeability (electromagnetism) , polymer , aqueous solution , fiber , hollow fiber membrane , polymer chemistry , chromatography , chemistry , composite material , organic chemistry , biochemistry , statistics , mathematics , engineering
In the present work, we investigate the potential of aqueous polymer microgels in membrane technology, especially for filtration applications. The poly( N ‐vinylcaprolactam)‐based microgels exhibit thermoresponsive behavior and were employed to coat hollow‐fiber membranes used for micro‐ and ultrafiltration. We discuss the preparation of microgel‐modified membranes (by “inside‐out” as well as “outside‐in” filtration in dead‐end mode). The clean‐water permeability and stability of these membranes was studied not only as a function of time, but also of temperature. The microgel‐modified membranes exhibit a reversible thermoresponsive behavior whereby both the resistance and the retention increased with decreasing temperature.