Strategies for the synthesis of fluorinated polyesters
In this work we synthetized three fluorinated polyesters from dimethyl tetrafluorosuccinate (DMTFS), dimethyl hexafluoroglutarate (DMHFG), and dimethyl octafluoroadipate (DMOFA) and ethylene glycol. The influence of parameters like monomer's size, temperature, vacuum, ultrasound and catalyst, o...
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ftpubmed:oai:pubmedcentral.nih.gov:9059763 2023-05-15T13:37:22+02:00 Strategies for the synthesis of fluorinated polyesters Zhao, Xiaoman Noro, Jennifer Fu, Jiajia Silva, Carla Cavaco-Paulo, Artur 2019-01-15 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9059763/ https://doi.org/10.1039/c8ra10341k en eng The Royal Society of Chemistry http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9059763/ http://dx.doi.org/10.1039/c8ra10341k This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ CC-BY-NC RSC Adv Chemistry Text 2019 ftpubmed https://doi.org/10.1039/c8ra10341k 2022-05-08T01:01:31Z In this work we synthetized three fluorinated polyesters from dimethyl tetrafluorosuccinate (DMTFS), dimethyl hexafluoroglutarate (DMHFG), and dimethyl octafluoroadipate (DMOFA) and ethylene glycol. The influence of parameters like monomer's size, temperature, vacuum, ultrasound and catalyst, on the polyesters synthesis was evaluated. The conversion rates were assessed considering (1)H NMR data and the results disclose the role of ultrasound (US) as crucial to attain high reaction conversion rates (≈20% of increase relatively to the reactions performed in absence of US). The effect of US was more relevant for the higher molecular weight monomers (DMHFG and DMOFA). The use of Candida antarctica lipase (immobilized CALB) marginally favors the synthesis reactions when fixing the other conditions. The size of the starting monomers influenced greatly the reaction conversion rates, as shorter monomers gave rise to high amount of product recovering. All the produced polyesters were isolated and fully characterized by NMR ((1)H and (19)F), FTIR, TGA and MALDI-TOF. Text Antarc* Antarctica PubMed Central (PMC) RSC Advances 9 4 1799 1806 |
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Chemistry Zhao, Xiaoman Noro, Jennifer Fu, Jiajia Silva, Carla Cavaco-Paulo, Artur Strategies for the synthesis of fluorinated polyesters |
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Chemistry |
description |
In this work we synthetized three fluorinated polyesters from dimethyl tetrafluorosuccinate (DMTFS), dimethyl hexafluoroglutarate (DMHFG), and dimethyl octafluoroadipate (DMOFA) and ethylene glycol. The influence of parameters like monomer's size, temperature, vacuum, ultrasound and catalyst, on the polyesters synthesis was evaluated. The conversion rates were assessed considering (1)H NMR data and the results disclose the role of ultrasound (US) as crucial to attain high reaction conversion rates (≈20% of increase relatively to the reactions performed in absence of US). The effect of US was more relevant for the higher molecular weight monomers (DMHFG and DMOFA). The use of Candida antarctica lipase (immobilized CALB) marginally favors the synthesis reactions when fixing the other conditions. The size of the starting monomers influenced greatly the reaction conversion rates, as shorter monomers gave rise to high amount of product recovering. All the produced polyesters were isolated and fully characterized by NMR ((1)H and (19)F), FTIR, TGA and MALDI-TOF. |
format |
Text |
author |
Zhao, Xiaoman Noro, Jennifer Fu, Jiajia Silva, Carla Cavaco-Paulo, Artur |
author_facet |
Zhao, Xiaoman Noro, Jennifer Fu, Jiajia Silva, Carla Cavaco-Paulo, Artur |
author_sort |
Zhao, Xiaoman |
title |
Strategies for the synthesis of fluorinated polyesters |
title_short |
Strategies for the synthesis of fluorinated polyesters |
title_full |
Strategies for the synthesis of fluorinated polyesters |
title_fullStr |
Strategies for the synthesis of fluorinated polyesters |
title_full_unstemmed |
Strategies for the synthesis of fluorinated polyesters |
title_sort |
strategies for the synthesis of fluorinated polyesters |
publisher |
The Royal Society of Chemistry |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9059763/ https://doi.org/10.1039/c8ra10341k |
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Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
RSC Adv |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9059763/ http://dx.doi.org/10.1039/c8ra10341k |
op_rights |
This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
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CC-BY-NC |
op_doi |
https://doi.org/10.1039/c8ra10341k |
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RSC Advances |
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4 |
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1799 |
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1806 |
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1766090788765171712 |