Double Stimuli-Responsive Isoporous Membranes via Post-Modification of pH-Sensitive Self-Assembled Diblock Copolymer Membranes

Clodt, J.I.; Filiz, V.; Rangou, S.; Buhr, K.; Abetz, C.; Hoeche, D.; Hahn, D.; Jung, A.; Abetz, V.

Journalpaper

Double Stimuli-Responsive Isoporous Membranes via Post-Modification of pH-Sensitive Self-Assembled Diblock Copolymer Membranes

Abstract

Double stimuli-responsive membranes are prepared by modification of pH-sensitive integral asymmetric polystyrene-b-poly(4-vinylpyridine) (PS-b-P4VP) diblock copolymer membranes with temperature-responsive poly(N-isopropylacrylamide) (pNIPAM) by a surface linking reaction. PS-b-P4VP membranes are first functionalized with a mild mussel-inspired polydopamine coating and then reacted via Michael addition with an amine-terminated pNIPAM-NH2 under slightly basic conditions. The membranes are thoroughly characterized by nuclear magnetic resonance (1H-NMR), Fourier transform infrared spectroscopy and X-ray-induced photoelectron spectroscopy. Additionally dynamic contact angle measurements are performed comparing the sinking rate of water droplets at different temperatures. The pH- and thermo-double sensitivities of the modified membranes are proven by determining the water flux under different temperature and pH conditions.

DOI Link to Publication

URL: https://publications.hereon.de/id/30105/
Authors:Clodt, J.I., Filiz, V., Rangou, S., Buhr, K., Abetz, C., Hoeche, D., Hahn, D., Jung, A., Abetz, V.
Year:2013
In: Advanced Functional Materials
Volume:23
Issue:6
Pages:731 - 738
Publisher:Wiley, Weinheim
Type:Journalpaper
ISSN: 1616-301X
Cite as: Clodt, J.I.; Filiz, V.; Rangou, S.; Buhr, K.; Abetz, C.; Hoeche, D.; Hahn, D.; Jung, A.; Abetz, V.: Double Stimuli-Responsive Isoporous Membranes via Post-Modification of pH-Sensitive Self-Assembled Diblock Copolymer Membranes. In: Advanced Functional Materials. Vol. 23 (2013) 6, 731 - 738. (DOI: 10.1002/adfm.201202015)