Borojeni, Iman AzarianZhou, BiaoEichhorn, S. Holger2018-11-092018-11-09May-18978-1-77355-023-7http://hdl.handle.net/10315/35424http://dx.doi.org/10.25071/10315/35424The overall objective of this study is the fabrication of defect-free electrospun mats of polysulfone (PSU) for applications as a porous support for proton exchange membranes. Electrospinning of PSU from dimethylformamide (DMF) solution generated mats free of cast formation and over-wetting, but unspun droplets were frequently observed in the mats because the electrospun jet was unstable. A stable jet and a large reduction of beads in the electrospun mats were obtained with a mixture of 20 vol.% acetone in DMF. Subsequent optomization of the flow rate to 1.5 mL/h and the applied voltage to 14 kV generated electrospun mats free of any beads based on SEM analysis.enThe copyright for the paper content remains with the author.Materials TechnologyComponentElectrospinningPolysulfone (PSU)Dimethylformamide (DMF)Proton Exchange Membrane Fuel Cell (PEMFC)Article