Abstract
Silicone curing inhibition using 3D-printed molds is a commonly encountered issue, that we addressed previously by proposing a universal post-treatment of molds. Still, curing inhibition mechanisms and how this was solved by UV and/or thermal treatments remained a mystery. Here, we report that curing inhibition is caused by leaching of phosphine oxide photo-initiator fragments from the molds, and that our post-treatment recipe allowed completion of the resin polymerization, elimination of these small fragments of photo-initiators by vaporization as well as their recombination into large molecular weight compounds that remained trapped in the molds.
Original language | English |
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Title of host publication | MicroTAS 2020 - 24th International Conference on Miniaturized Systems for Chemistry and Life Sciences |
Publisher | The Chemical and Biological Microsystems Society |
Pages | 282-283 |
Number of pages | 2 |
ISBN (Electronic) | 9781733419017 |
Publication status | Published - 2020 |
Event | 24th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2020 - Virtual Event Duration: 4 Oct 2020 → 9 Oct 2020 Conference number: 24 https://microtas2020.org/ |
Conference
Conference | 24th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2020 |
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Abbreviated title | MicroTAS 2020 |
City | Virtual Event |
Period | 4/10/20 → 9/10/20 |
Internet address |
Keywords
- 3D-printing
- PDMS curing inhibition
- Soft-lithography