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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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Publication details

The article was received on 25 Jan 2017, accepted on 23 Feb 2017 and first published on 24 Feb 2017


Article type: Paper
DOI: 10.1039/C7SM00195A
Citation: Soft Matter, 2017,13, 2239-2245
  • Open access: Creative Commons BY license
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    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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