Polymerization initiation of pure 2-hydroxyethylmethacrylate under shock wave compression

0556888 - FZÚ 2023 RIV GB eng J - Článek v odborném periodiku
Jia, Z.X. - Museur, L. - Traore, M. - Perruchot, Ch. - Brajer, Jan - Böhm, Marek - Kanaev, A.
Polymerization initiation of pure 2-hydroxyethylmethacrylate under shock wave compression.
New Journal of Chemistry. Roč. 46, č. 19 (2022), s. 9258-9263. ISSN 1144-0546. E-ISSN 1369-9261
Grant CEP: GA MŠMT EF15_006/0000674
GRANT EU: European Commission(XE) 739573 - HiLASE CoE; European Commission(XE) 871124 - LASERLAB-EUROPE
Grant ostatní: OP VVV - HiLASE-CoE(XE) CZ.02.1.01/0.0/0.0/15_006/0000674
Institucionální podpora: RVO:68378271
Klíčová slova: polymerization * pHEMA * high pressure processing * shock wave pressure
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 3.3, rok: 2022
Způsob publikování: Omezený přístup
https://doi.org/10.1039/D1NJ06228J

The ability to initiate chemical reactions without the need for potentially hazardous solvents, catalysts and radical initiators is of key importance for modern biotechnologies and medicine. In this study, laser-driven shock wave compression was performed on pure 2-hydroxyethylmethacrylate (HEMA) free of any additives in order to trigger the polymerization process. We showed that the generated peak shock-wave pressure in the range between 2 and 5.5 GPa permitted initiation of radical polymerization and the formation of poly-HEMA oligomers. The reaction begins with diradicals HEMA2˙˙ appearing at the peak pressure and, by reactions with HEMA monomers, forming HEMA3˙˙ diradicals on the 15 ns timescale. The chain propagation further occurs on the sub-μs timescale by associations of the trimer diradicals, which, because of a smaller reactivity, do not react with HEMA monomers. The proposed method can be considered for scale-up of the polymerization process of ultrapure organics.
Trvalý link: http://hdl.handle.net/11104/0331532