Mild synthesis of poly(HEMA)-networks as well-defined nanoparticles in supercritical carbon dioxide
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...
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| Format: | Article |
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Royal Society of Chemistry
2017
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| Online Access: | https://eprints.nottingham.ac.uk/45570/ |
| _version_ | 1848797157112414208 |
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| author | Parilti, R. Alaimo, D. Grignard, B. Boury, F. Howdle, S.M. Jerome, C. |
| author_facet | Parilti, R. Alaimo, D. Grignard, B. Boury, F. Howdle, S.M. Jerome, C. |
| author_sort | Parilti, R. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T19:59:24Z |
| format | Article |
| id | nottingham-45570 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:59:24Z |
| publishDate | 2017 |
| publisher | Royal Society of Chemistry |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-455702020-05-04T18:51:53Z https://eprints.nottingham.ac.uk/45570/ 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. 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. Royal Society of Chemistry 2017-06-26 Article PeerReviewed Parilti, R., Alaimo, D., Grignard, B., Boury, F., Howdle, S.M. and Jerome, C. (2017) Mild synthesis of poly(HEMA)-networks as well-defined nanoparticles in supercritical carbon dioxide. Journal of Materials Chemistry B, 5 . pp. 5806-5815. ISSN 2050-750X http://pubs.rsc.org/is/content/articlelanding/2017/tb/c7tb00740j#!divAbstract doi:10.1039/C7TB00740J doi:10.1039/C7TB00740J |
| spellingShingle | Parilti, R. Alaimo, D. Grignard, B. Boury, F. Howdle, S.M. Jerome, C. Mild synthesis of poly(HEMA)-networks as well-defined nanoparticles in supercritical carbon dioxide |
| title | Mild synthesis of poly(HEMA)-networks as well-defined nanoparticles in supercritical carbon dioxide |
| title_full | Mild synthesis of poly(HEMA)-networks as well-defined nanoparticles in supercritical carbon dioxide |
| title_fullStr | Mild synthesis of poly(HEMA)-networks as well-defined nanoparticles in supercritical carbon dioxide |
| title_full_unstemmed | Mild synthesis of poly(HEMA)-networks as well-defined nanoparticles in supercritical carbon dioxide |
| title_short | Mild synthesis of poly(HEMA)-networks as well-defined nanoparticles in supercritical carbon dioxide |
| title_sort | mild synthesis of poly(hema)-networks as well-defined nanoparticles in supercritical carbon dioxide |
| url | https://eprints.nottingham.ac.uk/45570/ https://eprints.nottingham.ac.uk/45570/ https://eprints.nottingham.ac.uk/45570/ |