Direct ink writing of dehydrofluorinated Poly(Vinylidene Difluoride) for microfiltration membrane fabrication

B Imtiaz; NA Shepelin; PC Sherrell; SE Kentish; AV Ellis

Journal article

Direct ink writing of dehydrofluorinated Poly(Vinylidene Difluoride) for microfiltration membrane fabrication

B Imtiaz, NA Shepelin, PC Sherrell, SE Kentish, AV Ellis

Journal of Membrane Science | Published : 2021

DOI: 10.1016/j.memsci.2021.119347

Abstract

Here, a hybrid process for the fabrication of dehydrofluorinated PVDF (dPVDF) microfiltration (MF) membranes is presented. dPVDF was fabricated through the bulk modification of PVDF using ethylenediamine. To produce inks for direct ink writing (DIW), the dPVDF was dissolved in N,N-dimethyacetamide along with a pore-forming agent, poly(vinyl pyrrolidone) (PVP) (5–30 wt%, relative to dPVDF concentration). Membranes were produced by direct ink writing of the inks into continuous films - followed by non-solvent induced phase separation (NIPS). Attenuated total reflectance – Fourier transform infrared (ATR-FTIR) and Raman spectroscopies confirmed alkene moieties within the dPVDF polymer, resultin..

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University of Melbourne Researchers

Peter Sherrell Author

Sandra Kentish Author

Amanda Ellis Author

Grants

Funding Acknowledgements

The authors are grateful to the Graduate Research Scholarship and the Rowden White Scholarship, University of Melbourne. This work was performed in part at the Materials Characterization and Fabrication Platform (MCFP) at the University of Melbourne and the Victorian Node of the Australian National Fabrication Facility (ANFF) .