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Preparation of highly interconnected hydrophilic polymers from emulsion templates with improved mechanical properties

Desire, CT, Khodabandeh, A, Schiller, TL, Wilson, R, Arrua, RD ORCID: 0000-0001-9057-294X, Bon, SAF and Hilder, EF ORCID: 0000-0002-4444-7870 2018 , 'Preparation of highly interconnected hydrophilic polymers from emulsion templates with improved mechanical properties' , European Polymer Journal, vol. 102 , pp. 56-67 , doi: 10.1016/j.eurpolymj.2018.02.002.

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Abstract

Highly interconnected hydrophilic polymers were prepared through the polymerisation of (paraffin-oil)-in-water emulsion templates using internal phases below 74 vol%. These were stabilised by Tween 85 and contained acrylamide and N,N/-methylene bisacrylamide, as monomers, in the continuous water phase. The emulsification energy was increased, resulting in increased contact between emulsion droplets, allowing open cellular and highly interconnected structures to be achieved. This was coupled with a reduction in the internal phase volume allowing the obtainment of highly interconnected materials with excellent mechanical properties under compression, producing a Young's modulus of 490 ± 90 MPa for a material with 36 ± 3% porosity. It was also found that the morphology of these materials could be altered through variations in the internal phase volume, the surfactant level and the emulsification energy. These porous polymers also possessed quite different behaviours in different solvent environments suggesting applications in controlled release or as rigid absorbents.

Item Type: Article
Authors/Creators:Desire, CT and Khodabandeh, A and Schiller, TL and Wilson, R and Arrua, RD and Bon, SAF and Hilder, EF
Keywords: high internal phase emulsions, medium internal phase emulsions, PolyMIPEs, PolyHIPEs, hydrophilic porous polymers
Journal or Publication Title: European Polymer Journal
Publisher: Pergamon-Elsevier Science Ltd
ISSN: 0014-3057
DOI / ID Number: 10.1016/j.eurpolymj.2018.02.002
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© 2018 Elsevier Ltd. All rights reserved

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