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Open AccessArticle

Bio-Inspired Polymer Membrane Surface Cleaning

Leibniz Institute of Surface Modification, Permoserstr 15, D-04318 Leipzig, Germany
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Academic Editor: Helmut Schlaad
Polymers 2017, 9(3), 97; https://doi.org/10.3390/polym9030097
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)
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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MDPI and ACS Style

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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