| Title: | Emulsion templated porous poly(thiol-enes): influence of photopolymerisation, emulsion composition, and phase behaviour on the porous structure and morphology |
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| Authors: | ID Hobiger, Viola (Author)
ID Paljevac, Muzafera (Author)
ID Krajnc, Peter (Author) |
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| Files: |  polymers-14-01338.pdf (5,24 MB)
MD5: 63EC5507653A1A956C6091271E450872
 https://www.mdpi.com/2073-4360/14/7/1338
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| Language: | English |
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| Work type: | Article |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FKKT - Faculty of Chemistry and Chemical Engineering
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| Abstract: | 1,6-hexanediol diacrylate (HDDA) or divinyl adipate (DVA) and pentaerythritol tetrakis(3-
mercaptopropionate) (TT) were polymerised via a thiol-ene radical initiated photopolymerisation
using emulsions with a high volume fraction of internal droplet phase and monomers in the continuous phase as precursors. The porous structure derived from the high internal phase emulsions
(HIPEs) followed the precursor emulsion setup resulting in an open porous cellularly structured
polymer. Changing the emulsion composition and polymerisation conditions influenced the resulting
morphological structure significantly. The investigated factors influencing the polymer monolith
morphology were the emulsion phase ratio and surfactant concentration, leading to either interconnected cellular type morphology, bicontinuous porous morphology or a hollow sphere inverted
structure of the polymerised monoliths. The samples with interconnected cellular morphology had
pore diameters between 4 µm and 10 µm with approx. 1 µm sized interconnecting channels while
samples with bicontinuous morphology featured approx. 5 µm wide pores between the polymer
domains. The appropriate choice of emulsion composition enabled the preparation of highly porous
poly(thiol-enes) with either polyHIPE or bicontinuous morphology. The porosities of the prepared
samples followed the emulsion droplet phase share and could reach up to 88%. |
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| Keywords: | high internal phase emulsions, thiol-ene polymerisation, polyHIPE, bicontinuous structure, phase inversion, poly(thiol-enes) |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 07.02.2022 |
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| Article acceptance date: | 23.03.2022 |
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| Publication date: | 25.03.2022 |
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| Publisher: | MDPI |
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| Year of publishing: | 2022 |
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| Number of pages: | 12 str. |
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| Numbering: | Vol. 14, iss. 7 |
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| PID: | 20.500.12556/DKUM-92779  |
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| UDC: | 66.095.26 |
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| ISSN on article: | 2073-4360 |
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| COBISS.SI-ID: | 102467075 |
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| DOI: | 10.3390/polym14071338 |
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| Copyright: | © 2022 by the authors |
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| Publication date in DKUM: | 13.05.2025 |
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| Views: | 144 |
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| Downloads: | 16 |
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| Metadata: |    |
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| Categories: | Misc.
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