Plastic Scintillators via Rapid Photoinitiated Cationic Polymerization of Vinyltoluene

Cationic photopolymerization is applied for the rapid curing of a vinyltoluene and fluorophore solution into an efficient plastic scintillator. A hard solid is obtained via UV light-initiated polymerization of vinyltoluene, diaryliodonium salt, 9,9-dimethyl-2-phenylfluorene (PhF), and 9,9-dimethyl-2...

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Bibliographic Details
Published in:ACS applied polymer materials 2022-06, Vol.4 (6), p.4069-4074
Main Authors: Chandler, Caleb, Porcincula, Dominique H., Ford, Michael J., Hook, Connor, Zhang, Xianyi, Brodsky, Jason, Sellinger, Alan
Format: Article
Language:English
Subjects:
cationic polymerization
fluorescence
MATERIALS SCIENCE
photopolymerization
plastic scintillator
radiation detection
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Summary:Cationic photopolymerization is applied for the rapid curing of a vinyltoluene and fluorophore solution into an efficient plastic scintillator. A hard solid is obtained via UV light-initiated polymerization of vinyltoluene, diaryliodonium salt, 9,9-dimethyl-2-phenylfluorene (PhF), and 9,9-dimethyl-2,7-distyrlfluorene (SFS) at ambient conditions with high conversion rates under a range of cationic photoinitiator concentrations, fluorophore concentrations, and light intensities. Insight into photopolymerization kinetics via photo differential scanning calorimetry (photoDSC) revealed photocuring time scales similar to those achieved in a commercial 3D printing resin. Scintillator samples prepared cationically performed well compared to samples of equivalent compositions prepared by a lengthy thermally initiated radical polymerization.
ISSN:2637-6105
2637-6105
DOI:10.1021/acsapm.2c00316