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Membranes 2017, 7(4), 70; https://doi.org/10.3390/membranes7040070

Colour-Value Based Method for Polydopamine Coating-Stability Characterization on Polyethersulfone Membranes

1
Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Str.1, 21502 Geesthacht, Germany
2
MAHLE International GmbH, Pragstr. 26-46, 70376 Stuttgart, Germany
These authors contributed equally to this manuscript.
*
Author to whom correspondence should be addressed.
Received: 21 November 2017 / Revised: 11 December 2017 / Accepted: 13 December 2017 / Published: 16 December 2017
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Abstract

Porous polyethersulfone membranes as used in oenology were investigated in order to evaluate temperature-dependent permeances in a temperature range from 10 to 35 °C. A temperature correction factor was determined for this type of membrane to get accurate and comparable results for further developments. Moreover, the membranes were modified with a bio-inspired polydopamine coating in order to reduce fouling. The performance of the membranes could be increased with respect to permeance and flux recovery under cross-flow conditions. In order to test the applicability and stability of the coating layer, they were treated with basic and acidic cleaning agents as used in industry for fouled membranes. The chemical stability of the coating layer was studied under basic and acidic conditions, by systematic observation of the colour change of the coated membranes over treatment time. View Full-Text
Keywords: microfiltration; ultrafiltration; polydopamine; coating; stability; temperature dependent fluxes; polyethersulfone membranes microfiltration; ultrafiltration; polydopamine; coating; stability; temperature dependent fluxes; polyethersulfone membranes
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Bucher, T.; Clodt, J.I.; Grabowski, A.; Hein, M.; Filiz, V. Colour-Value Based Method for Polydopamine Coating-Stability Characterization on Polyethersulfone Membranes. Membranes 2017, 7, 70.

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