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Robust open cellular porous polymer monoliths made from cured colloidal gels of latex particles

Desire, CT, Lotierzo, A, Dario, AR, Hilder, EF ORCID: 0000-0002-4444-7870 and Bon, SAF 2018 , 'Robust open cellular porous polymer monoliths made from cured colloidal gels of latex particles' , Green Chemistry, vol. 20, no. 11 , pp. 2499-2511 , doi: 10.1039/c8gc01055b.

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Abstract

The coagulation of oppositely charged latexes, prepared from the soap-free emulsion polymerisation of styrene using water as the reaction medium, resulted in the obtainment of colloidal gels that were porous in nature and held together by electrostatic interactions. Chemical crosslinking, involving the introduction of a water-soluble crosslinker, resulted in the obtainment of stronger chemical bonds between particles affording a rigid porous material known as a monolith. It was found that, in a simpler approach, these materials could be prepared using a single latex where the addition of ammonium persulfate both resulted in the formation of the colloidal gel and initiated the crosslinking process. The pore size of the resulting monoliths was predictable as this was observed to directly correlate to the particle diameter, with larger pores achieved using particles of increased size. All gels obtained in this work were highly mouldable and retained their shape, which allowed for a range of formats to be easily prepared without the requirement of a mould.

Item Type: Article
Authors/Creators:Desire, CT and Lotierzo, A and Dario, AR and Hilder, EF and Bon, SAF
Keywords: capillary liquid-chromatography, free emulsion copolymerization, reactive gelation process, solid-phase extraction, tissue engineering
Journal or Publication Title: Green Chemistry
Publisher: Royal Society of Chemistry
ISSN: 1463-9262
DOI / ID Number: 10.1039/c8gc01055b
Copyright Information:

© The Royal Society of Chemistry 2018

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