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Mild synthesis of poly(HEMA)-networks as well-defined nanoparticles in supercritical carbon dioxide

Parilti, R.; Alaimo, D.; Grignard, B.; Boury, F.; Howdle, S.M.; Jerome, C.

Authors

R. Parilti

D. Alaimo

B. Grignard

F. Boury

C. Jerome



Abstract

Free-radical dispersion polymerisation of 2-hydroxyethyl methacrylate was carried out in supercritical carbon dioxide (scCO2) in the presence of stabilisers based on polyethylene oxide (PEO) and poly(heptadecafluorodecyl acrylate) (PFDA). Different architectures of copolymers (random, palm-tree and diblock) were tested for their surface tension, cloud point and as a stabilising agent. The diblock architecture was found to be the best candidate resulting in poly(HEMA) spherical particles with a size of 316 nm. Furthermore, the effect of the CO2-phobic block (PEO) in the diblock architecture was investigated by using three different chain lengths (1000, 2000, 5000 g mol−1). By optimizing the stabiliser composition and structure, mild reaction conditions have been identified allowing us to obtain well-defined spherical cross-linked poly(HEMA) particles with a mean diameter of unprecedented low size (216 nm) at a temperature as low as 35 °C.

Citation

Parilti, R., Alaimo, D., Grignard, B., Boury, F., Howdle, S., & Jerome, C. (2017). Mild synthesis of poly(HEMA)-networks as well-defined nanoparticles in supercritical carbon dioxide. Journal of Materials Chemistry B, 5, https://doi.org/10.1039/C7TB00740J

Journal Article Type Article
Acceptance Date Jun 25, 2017
Publication Date Jun 26, 2017
Deposit Date Sep 8, 2017
Publicly Available Date Mar 29, 2024
Journal Journal of Materials Chemistry B
Print ISSN 2050-750X
Electronic ISSN 2050-750X
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 5
DOI https://doi.org/10.1039/C7TB00740J
Public URL https://nottingham-repository.worktribe.com/output/868488
Publisher URL http://pubs.rsc.org/is/content/articlelanding/2017/tb/c7tb00740j#!divAbstract

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