Enzyme-catalyzed modification of PES surfaces: reduction in adsorption of BSA, dextrin and tannin

Journal of Colloid and Interface Science
Norhan NadyRemko M Boom

Abstract

Poly(ethersulfone) (PES) can be modified in a flexible manner using mild, environmentally benign components such as 4-hydroxybenzoic acid and gallic acid, which can be attached to the surface via catalysis by the enzyme laccase. This leads to grafting of mostly linear polymeric chains (for 4-hydroxybenzoic acid, and for gallic acid at low concentration and short modification time) and of networks (for gallic acid at high concentration and long exposure time). The reaction is stopped at a specific time, and the modified surfaces are tested for adsorption of BSA, dextrin and tannin using in-situ reflectometry and AFM imaging. At short modification times, the adsorption of BSA, dextrin and tannin is significantly reduced. However, at longer modification times, the adsorption increases again for both substrates. As the contact angle on modified surfaces at short modification times is reduced (indicative of more hydrophilic surfaces), and keeps the same low values at longer modification times, hydrophilicity is not the only determining factor for the measured differences. At longer modification times, intra-layer reactivity will increase the amount of cross-linking (especially for gallic acid), branching (for 4-hydroxybenzoic acid) ...Continue Reading

References

Sep 1, 1986·Advances in Colloid and Interface Science·W Norde
Feb 19, 1998·Journal of Colloid and Interface Science·M R BöhmerG J M Koper
May 18, 2005·Journal of Colloid and Interface Science·W T E BoskerM A Cohen Stuart
Nov 29, 2008·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Elizabeth ArkhangelskyVitaly Gitis
Feb 5, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Ai T NguyenHan Zuilhof
Feb 25, 2011·ACS Applied Materials & Interfaces·Norhan NadyHan Zuilhof
Jun 7, 2011·Macromolecular Rapid Communications·Cesar Rodriguez-EmmeneggerWilhelm T S Huck

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Citations

Jan 13, 2015·Cellular and Molecular Life Sciences : CMLS·Cinzia PezzellaAlessandra Piscitelli
Mar 2, 2018·Designed Monomers and Polymers·Noof A AlenaziAbdullah M Asiri
Aug 15, 2016·Polymers·Norhan NadySherif H Kandil
Nov 8, 2017·Chembiochem : a European Journal of Chemical Biology·Sjoerd SlagmanMaurice C R Franssen

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