Continuous dimethyldioxirane generation for polymer epoxidation
© The Royal Society of Chemistry 2021. Post-polymerization modification of commodity polymers yields new applications for materials already produced industrially. Incorporation of small amounts of epoxides into unsaturated polymers such as polybutadiene expands their use for grafting and compatibili...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Royal Society of Chemistry (RSC)
2021
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| Online Access: | https://hdl.handle.net/1721.1/134438 |
| _version_ | 1826188803849584640 |
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| author | Ahlqvist, Grace P Burke, Eileen G Johnson, Jeremiah A Jamison, Timothy F |
| author_facet | Ahlqvist, Grace P Burke, Eileen G Johnson, Jeremiah A Jamison, Timothy F |
| author_sort | Ahlqvist, Grace P |
| collection | MIT |
| description | © The Royal Society of Chemistry 2021. Post-polymerization modification of commodity polymers yields new applications for materials already produced industrially. Incorporation of small amounts of epoxides into unsaturated polymers such as polybutadiene expands their use for grafting and compatibilization applications, but controlled epoxidation of these polymers in a safe, scalable manner presents a challenge. Herein we describe the development of a reactor for the continuous flow generation and use of dimethyldioxirane (DMDO) and its application to the low-level epoxidation of unsaturated polymers. A continuous stirred tank reactor (CSTR) prevents reactor clogging by allowing solid precipitates to settle, enabling the pumping of a homogeneous solution of oxidant. Modification of relative concentrations, flow rates, and temperatures achieves variable epoxidation levels. This method has been demonstrated on gram scale. |
| first_indexed | 2024-09-23T08:05:18Z |
| format | Article |
| id | mit-1721.1/134438 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T08:05:18Z |
| publishDate | 2021 |
| publisher | Royal Society of Chemistry (RSC) |
| record_format | dspace |
| spelling | mit-1721.1/1344382021-10-28T05:03:32Z Continuous dimethyldioxirane generation for polymer epoxidation Ahlqvist, Grace P Burke, Eileen G Johnson, Jeremiah A Jamison, Timothy F © The Royal Society of Chemistry 2021. Post-polymerization modification of commodity polymers yields new applications for materials already produced industrially. Incorporation of small amounts of epoxides into unsaturated polymers such as polybutadiene expands their use for grafting and compatibilization applications, but controlled epoxidation of these polymers in a safe, scalable manner presents a challenge. Herein we describe the development of a reactor for the continuous flow generation and use of dimethyldioxirane (DMDO) and its application to the low-level epoxidation of unsaturated polymers. A continuous stirred tank reactor (CSTR) prevents reactor clogging by allowing solid precipitates to settle, enabling the pumping of a homogeneous solution of oxidant. Modification of relative concentrations, flow rates, and temperatures achieves variable epoxidation levels. This method has been demonstrated on gram scale. 2021-10-27T20:05:00Z 2021-10-27T20:05:00Z 2021 2021-03-11T14:21:13Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/134438 en 10.1039/d0py01676d Polymer Chemistry Creative Commons Attribution Noncommercial 3.0 unported license https://creativecommons.org/licenses/by-nc/3.0/ application/pdf Royal Society of Chemistry (RSC) Royal Society of Chemistry (RSC) |
| spellingShingle | Ahlqvist, Grace P Burke, Eileen G Johnson, Jeremiah A Jamison, Timothy F Continuous dimethyldioxirane generation for polymer epoxidation |
| title | Continuous dimethyldioxirane generation for polymer epoxidation |
| title_full | Continuous dimethyldioxirane generation for polymer epoxidation |
| title_fullStr | Continuous dimethyldioxirane generation for polymer epoxidation |
| title_full_unstemmed | Continuous dimethyldioxirane generation for polymer epoxidation |
| title_short | Continuous dimethyldioxirane generation for polymer epoxidation |
| title_sort | continuous dimethyldioxirane generation for polymer epoxidation |
| url | https://hdl.handle.net/1721.1/134438 |
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