Authors
Bastien Venzac, Shanliang Deng, Ziad Mahmoud, Aufried Lenferink, Fabrice Bray, Cees Otto, Christian Rolando, Séverine Le Gac
Publication date
2020
Conference
24th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2020
Pages
282-283
Publisher
The Chemical and Biological Microsystems Society
Description
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.
Total citations
Scholar articles
B Venzac, S Deng, Z Mahmoud, A Lenferink, F Bray… - 24th International Conference on Miniaturized Systems …, 2020