I noticed in C&EN that a bio-derived solvent called Cyrene has been developed in hopes of it replacing DMF or NMP. Has anyone tried to dissolve PVDF in Cyrene? If so, what were your results? Did it dissolve at room temperature? I am asking as I am curious if I can replace NMP when making coating electrodes for battery applications.
Dear Dr. Diana M. Lutz,
Cyrene—dihydrolevoglucosenone—is specifically being used to recover polyvinylidene fluoride (PVDF)—a high performance polymer widely used as a binder in Li-ion battery cathodes. PVDF processing currently relies on the use of NMP— a reprotoxic solvent, which is under intense regulatory pressure. By using Cyrene, R2LIB is helping recover a valuable polymer in a sustainable way.
Dihydrolevoglucosenone (Cyrene) is a new and very promising bio-based solvent substitute for widely used dipolar aprotic solvents (e.g. NMP) that are increasingly under threat from chemical legislation such as REACh. Dihydrolevoglucosenone can be made in two simple steps from biomass ensuring a low environmental footprint as well as economic viability. Currently, work is in progress to make the hydrogenation process more sustainable by replacing precious palladium by other non-critical transition metals. The solvent properties of dihydrolevoglucosenone are very similar to NMP, but in the absence of nitrogen or sulphur heteroatoms which lead to NOx and SOx emissions upon incineration, end-of-life environmental concerns are reduced.
—Sherwood et al.
For more details, please see the source at: https://www.greencarcongress.com/2019/07/20190731-circa.html
and directly the interesting paper:
-Dihydrolevoglucosenone (Cyrene™) as a bio-based alternative for dipolar aprotic solvents
James Sherwood, Mario De Bruyn, Andri Constandinou, Laurianne Moity, C. Rob McElroy,Thomas J. Farmer, Tony Duncan, Warwick Raverty, Andrew J. Huntand James H. Clark
Electronic Supplementary Material (ESI) for ChemComm. (2014)
Available at: http://www.rsc.org/suppdata/cc/c4/c4cc04133j/c4cc04133j1.pdf
Best regards, Pierluigi Traverso
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