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Emulsion-templated porous polymers prepared by thiol-ene and thiol-yne photopolymerisation using multifunctional acrylate and non-acrylate monomers
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Chen, Chaoyi, Eissa, Ahmed M., Schiller, Tara L. and Cameron, Neil R. (2017) Emulsion-templated porous polymers prepared by thiol-ene and thiol-yne photopolymerisation using multifunctional acrylate and non-acrylate monomers. Polymer, 126 . pp. 395-401. doi:10.1016/j.polymer.2017.04.021
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WRAP-emulsion-templated-porous-polymers-monomers-Cameron-2017.pdf - Accepted Version - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (1565Kb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.polymer.2017.04.021
Abstract
The chemical and mechanical properties of macroporous polymer substrates play a crucial role in the determination of their end-application. The preparation of highly (macro)porous monolithic polymers (polyHIPEs) by emulsion templating and thiol-ene/yne photopolymerisation, using multifunctional acrylate, allyl ether and alkyne-based monomers with trimethylolpropane tris (3-mercaptopropionate) (TMPTMP), is described in this work. Issues associated with monomer solubility and/or stability of the produced high internal phase emulsions (HIPEs) are tackled. Scanning electron microscopy (SEM) is used to study the morphology and porosity (average void diameters) of the obtained materials. Due to the nature of the photoinitiated thiol-ene reactions, materials obtained from acrylate monomers display residual thiols that are quantified by a colourimetric (Ellman's) assay. Raman spectroscopy is also shown to be a complementary technique to evaluate the residual thiol content. The influence of the monomer functionality on the mechanical properties of the material is explored using compression tests. Significant differences in the surface functionality and mechanical behavior between materials prepared with comonomers able to homopolymerise (acrylates) and those unable to homopolymerise (allyl ethers; alkynes) are demonstrated.
| Item Type: | Journal Article | ||||||||||
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| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||||||
| Divisions: | Faculty of Science > Engineering Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) |
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| Library of Congress Subject Headings (LCSH): | Porous materials., Emulsions, Photopolymerization | ||||||||||
| Journal or Publication Title: | Polymer | ||||||||||
| Publisher: | Elsevier Science BV | ||||||||||
| ISSN: | 0032-3861 | ||||||||||
| Official Date: | 22 September 2017 | ||||||||||
| Dates: |
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| Date of first compliant deposit: | 11 July 2017 | ||||||||||
| Volume: | 126 | ||||||||||
| Page Range: | pp. 395-401 | ||||||||||
| DOI: | 10.1016/j.polymer.2017.04.021 | ||||||||||
| Status: | Peer Reviewed | ||||||||||
| Publication Status: | Published | ||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||
| RIOXX Funder/Project Grant: |
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