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Hydrophilic Self-Replenishing Coatings with Long-Term Water Stability for Anti-Fouling Applications

Laboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
DSM Materials Science Center BV Netherlands, 6167 RD Geleen, The Netherlands
Authors to whom correspondence should be addressed.
Coatings 2018, 8(5), 184;
Received: 14 March 2018 / Revised: 19 April 2018 / Accepted: 30 April 2018 / Published: 14 May 2018
(This article belongs to the Special Issue Progress in Self-Healing Coatings)
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Hydrophilic coatings have recently emerged as a new approach to avoiding the adhesion of (bio)organisms on surfaces immersed in water. In these coatings the hydrophilic character is crucial for the anti-fouling (AF) performance. However, this property can be rapidly lost due to the inevitable damages which occur at the surface, reducing the long-term effectiveness of the AF functionality. We report hydrophilic polycarbonate-poly(ethylene glycol) methyl ether (mPEG) polyurethane coatings with tunable hydrophilic properties as well as an excellent and long-term stability in water. The coatings exhibit low protein adhesion values and are able to self-replenish their hydrophilicity after damage, due to the existence of a reservoir of hydrophilic dangling chains incorporated in the bulk. The combination of low Tg and sufficient mobility of the mPEG dangling chains (enabled by chains with higher molecular weight) proved to be crucial to ensure autonomous surface hydrophilicity recovery when the coatings were immersed in water. This coatings and design approach offers new possibilities towards high-performance AF coatings with an extended service life-time which can be used in several major applications areas, such as marine and biomedical coatings, with major economic and environmental benefits. View Full-Text
Keywords: self-replenishing; anti-fouling; hydrophilic coatings; polycarbonate; mPEG; dangling chains self-replenishing; anti-fouling; hydrophilic coatings; polycarbonate; mPEG; dangling chains

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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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Jiménez-Pardo, I.; Van der Ven, L.G.J.; Van Benthem, R.A.T.M.; De With, G.; Esteves, A.C.C. Hydrophilic Self-Replenishing Coatings with Long-Term Water Stability for Anti-Fouling Applications. Coatings 2018, 8, 184.

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