Revisiting the polyvinylidene fluoride heterogeneous alkaline reaction mechanism in propan-2-ol: An additional hydrogenation step

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[1] Ahmed, Mohamed Magdi
[2] Hrůza, Jakub
[3] Stuchlík, Martin
[4] Antoš, Vojtěch
[5] Müllerová, Jana
[6] Řezanka, Michal
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Ahmed, Mohamed Magdi (mohamed.ahmed@tul.cz) | 1600年 / Elsevier Ltd卷 / 156期
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The reaction between polyvinylidene fluoride (PVDF) nanofibers and sodium hydroxide in the presence of propan-2-ol (IPA) as phase transfer catalyst (PTC) was studied. In this work; we propose a new reaction mechanism for the formation of the conjugate structure. FTIR and Raman spectra were analyzed with a focus on symmetry basics; which subsequently lead to a clear structure determination and imply that there is in fact an additional hydrogenation step to the dehydrofluorination mechanism previously reported. Sodium isopropylalcoholate catalyzes the Csp2–F bond cleavage in a transfer hydrogenation step and results in the formation of Csp2–H bond; a mechanism supported by the presence of acetone. These findings are of particular importance to PVDF alkaline reaction; it indicates that the use of IPA as PTC alter the reaction mechanism. © 2021;
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