Issue 9, 2013
From the journal:

Soft Matter

Aligned porous stimuli-responsive hydrogels via directional freezing and frozen UV initiated polymerization†

Michael Barrowa  and  Haifei Zhang*a  

* Corresponding authors

a Department of Chemistry, University of Liverpool, UK
E-mail: zhanghf@liv.ac.uk
Tel: +44 (0)151 7943545

Abstract

Directional freezing and frozen UV initiated polymerization have been employed to prepare aligned porous stimuli-responsive hydrogels. Oligo-ethylene glycol methacrylates and dimethylamino ethyl methacrylate monomers are used to produce temperature and pH-responsive hydrogels respectively. The aqueous monomer mixtures are directionally frozen in liquid nitrogen and the frozen samples with dry ice are then polymerized by UV irradiation. Aligned porous morphologies are observed in both dry and hydrated states. The hydrogels exhibit stimuli-responsive behaviour in aqueous conditions and anisotropic compressive strength and diffusion behaviour with respect to freezing direction.

Graphical abstract: Aligned porous stimuli-responsive hydrogels via directional freezing and frozen UV initiated polymerization

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Article information

DOI
https://doi.org/10.1039/C2SM27722K
Article type
Paper
Submitted
26 Nov 2012
Accepted
20 Dec 2012
First published
25 Jan 2013

Soft Matter, 2013,9, 2723-2729

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Aligned porous stimuli-responsive hydrogels via directional freezing and frozen UV initiated polymerization

M. Barrow and H. Zhang, Soft Matter, 2013, 9, 2723 DOI: 10.1039/C2SM27722K

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