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Issue 11, 2017
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Switchable surface structured hydrogel coatings

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Abstract

Switchable surface structures based on hydrogels are an emerging field in material science, microfluidics, soft robotics and anti-fouling. Here, we describe a novel method that uses a photo-cross-linkable terpolymer to create a hydrogel coating with a switchable surface structure. The terpolymer is based on poly(N-isopropylacrylamide) (PNIPAm) and it is shown that simple coating technologies like slit die coating can be used under ambient conditions. It is also shown that the swelling ratio of the coating is controlled by the energy dose of ultraviolet (UV) light. Simple and complex surface structures were created using respectively single or multiple UV illumination steps through masks and it is shown that the hydrogel coatings can be reversibly switched from a structured state to a flat state with temperature.

Graphical abstract: Switchable surface structured hydrogel coatings

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Article information


Submitted
25 Jan 2017
Accepted
23 Feb 2017
First published
24 Feb 2017

This article is Open Access

Soft Matter, 2017,13, 2239-2245
Article type
Paper

Switchable surface structured hydrogel coatings

S. Kommeren, J. Dongmo and C. W. M. Bastiaansen, Soft Matter, 2017, 13, 2239
DOI: 10.1039/C7SM00195A

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    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
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    [Original citation] - Published by The Royal Society of Chemistry.

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