Suflfonated polysulfone (sPSU) ionomer has recently emerged as very promising alternative to perfluorinated membranes in proton exchange membrane fuel cell applications. To elucidate the effect of membrane fabrication process on the final properties of the films, sPSU membranes were prepared by two of the most common preparation procedures, that are mechanical extrusion by doctor blade or recast process, and characterized for their morphological, mechanical, dimensional and transport features. A clear anisotropy was observed in the proton conductivity, dimensional swelling and mechanical resistance of mechanically oriented sPSU. Recast membrane exhibited higher through-plane conductivity and promises for better fuel cell performance. Contrariwise, mechanical extrusion process can fabricate membrane with superior mechanical strength and outstanding anti-swelling ability. The latter procedure could be exploited to prepare thin but still stable and strength sPSU membranes able to better perform in PEMFCs.

磺化聚砜（sPSU）离聚物最近在质子交换膜燃料电池应用中作为全氟化膜的非常有希望的替代品出现。为了阐明膜制造工艺对薄膜最终性能的影响，采用两种最常用的制备方法制备了sPSU膜，即通过刮刀机械挤压或重铸工艺，并对其形态，机械，尺寸和特性进行了表征。运输功能。在机械取向的sPSU的质子传导率，尺寸膨胀和机械阻力方面观察到明显的各向异性。重铸膜表现出更高的贯穿面电导率，有望实现更好的燃料电池性能。相反，机械挤压工艺可以制造出具有优异机械强度和出色的抗溶胀能力的膜。可以利用后一种方法来制备能够在PEMFC中更好地运行的薄但仍稳定且强度高的sPSU膜。