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Properties of electrospun PVDF/PMMA/CA membrane as lithium based battery separator
2019/11/27 21:20:40 admin
Poly vinylidene fluoride: poly methyl methacrylate: cellulose acetate (CA) at ratios of 100: 0: 0, 90: 10: 0, 90: 5: 5 and 90: 0: 10 respectively, were successfully electrospun. These membranes were mixed to form a 12 wt% solution prepared with volume ratio 7: 3 of DMAc: acetone solvents. These membranes were then analyzed using differential scanning calorimetry, scanning electron microscopy, FTIR, WAXD, pore size, porosity% and electrolyte uptake (EU)%. It was observed that the best absorption results were obtained in the presence of CA. The electrospun membrane at ratio of 90: 0: 10 was observed with the highest porosity of 99.1% and EU at 323 %. It also had a 43.6% crystallinity and a 162 degrees C melting temperature. It was then concluded that addition of CA improved the separator properties.
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