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Article

Electrospinning of a Copolymer PVDF-co-HFP Solved in DMF/Acetone: Explicit Relations among Viscosity, Polymer Concentration, DMF/Acetone Ratio and Mean Nanofiber Diameter

Institute of Hydrodynamics, Czech Academy of Sciences, 166 12 Prague, Czech Republic
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Author to whom correspondence should be addressed.
Academic Editors: Lilia Sabantina, Juana María Rosas, Francisco José García-Mateos and Ramiro Rafael Ruiz Rosas
Polymers 2021, 13(19), 3418; https://doi.org/10.3390/polym13193418
Received: 15 September 2021 / Revised: 29 September 2021 / Accepted: 30 September 2021 / Published: 5 October 2021
(This article belongs to the Special Issue Polymeric Nanofibers and Nanotextiles for High-Tech Applications)
The process of electrospinning polymer solutions depends on many entry parameters, with each having a significant impact on the overall process and where complexity prevents the expression of their interplay. However, under the assumption that most parameters are fixed, it is possible to evaluate the mutual relations between pairs or triples of the chosen parameters. In this case, the experiments were carried out with a copolymer poly(vinylidene-co-hexafluoropropylene) solved in mixed N,N’-dimethylformamide (DMF)/acetone solvent for eight polymer concentrations (8, 10, 12, 15, 18, 21, 24, and 27 wt.%) and five DMF/acetone ratios (1/0, 4/1, 2/1, 1/1, 1/2). Processing of the obtained data (viscosity, mean nanofiber diameter) aimed to determine algebraic expressions relating both to viscosity and a mean nanofiber diameter with polymer concentration, as well as DMF/acetone ratio. Moreover, a master curve relating these parameters with no fitting factors was proposed continuously covering a sufficiently broad range of concentration as well as DMF/acetone ratio. A comparison of algebraic evaluation with the experimental data seems to be very good (the mean deviation for viscosity was about 2%, while, for a mean nanofiber diameter was slightly less than 10%). View Full-Text
Keywords: electrospinning; nanofibrous web; poly(vinylidene-co-hexafluoropropylene); N,N’-dimethylformamide; acetone; master curve electrospinning; nanofibrous web; poly(vinylidene-co-hexafluoropropylene); N,N’-dimethylformamide; acetone; master curve
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MDPI and ACS Style

Filip, P.; Zelenkova, J.; Peer, P. Electrospinning of a Copolymer PVDF-co-HFP Solved in DMF/Acetone: Explicit Relations among Viscosity, Polymer Concentration, DMF/Acetone Ratio and Mean Nanofiber Diameter. Polymers 2021, 13, 3418. https://doi.org/10.3390/polym13193418

AMA Style

Filip P, Zelenkova J, Peer P. Electrospinning of a Copolymer PVDF-co-HFP Solved in DMF/Acetone: Explicit Relations among Viscosity, Polymer Concentration, DMF/Acetone Ratio and Mean Nanofiber Diameter. Polymers. 2021; 13(19):3418. https://doi.org/10.3390/polym13193418

Chicago/Turabian Style

Filip, Petr, Jana Zelenkova, and Petra Peer. 2021. "Electrospinning of a Copolymer PVDF-co-HFP Solved in DMF/Acetone: Explicit Relations among Viscosity, Polymer Concentration, DMF/Acetone Ratio and Mean Nanofiber Diameter" Polymers 13, no. 19: 3418. https://doi.org/10.3390/polym13193418

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