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Polymers 2017, 9(3), 97;

Bio-Inspired Polymer Membrane Surface Cleaning

Leibniz Institute of Surface Modification, Permoserstr 15, D-04318 Leipzig, Germany
Author to whom correspondence should be addressed.
Academic Editor: Helmut Schlaad
Received: 22 February 2017 / Revised: 2 March 2017 / Accepted: 5 March 2017 / Published: 9 March 2017
(This article belongs to the Special Issue Bio-inspired and Bio-based Polymers)
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To generate polyethersulfone membranes with a biocatalytically active surface, pancreatin was covalently immobilized. Pancreatin is a mixture of digestive enzymes such as protease, lipase, and amylase. The resulting membranes exhibit self-cleaning properties after “switching on” the respective enzyme by adjusting pH and temperature. Thus, the membrane surface can actively degrade a fouling layer on its surface and regain initial permeability. Fouling tests with solutions of protein, oil, and mixtures of both, were performed, and the membrane’s ability to self-clean the fouled surface was characterized. Membrane characterization was conducted by investigation of the immobilized enzyme concentration, enzyme activity, water permeation flux, fouling tests, porosimetry, X-ray photoelectron spectroscopy, and scanning electron microscopy. View Full-Text
Keywords: polymer membrane; surface modification; enzyme immobilization; catalytic properties; self-cleaning polymer membrane; surface modification; enzyme immobilization; catalytic properties; self-cleaning

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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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Schulze, A.; Breite, D.; Kim, Y.; Schmidt, M.; Thomas, I.; Went, M.; Fischer, K.; Prager, A. Bio-Inspired Polymer Membrane Surface Cleaning. Polymers 2017, 9, 97.

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