Temperature‐Modulated Water Filtration Using Microgel‐Functionalized Hollow‐Fiber Membranes1. Issue 22 (16th April 2014)

• Record Type: Journal Article
• Authors: Menne, Daniel; Pitsch, Fee; Wong, John E.; Pich, Andrij; Wessling, Matthias
• Is Part Of: Angewandte Chemie international edition. Volume 53:Issue 22(2014)
• Page Start: 5706
• Page End: 5710
• Publication Date: 2014-04-16
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201400316
• Languages: English
• ISSNs: 1433-7851

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>In the present work, we investigate the potential of aqueous polymer microgels in membrane technology, especially for filtration applications. The poly(<italic>N</italic>‐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.</p> </abstract>