oa South African Journal of Chemistry - Preparation and Characterization of Sulfonated Poly (ether ether ketone) / Phosphated Zirconia Nanoparticles Composite Proton-conducting Membranes



Proton-conducting membranes of organic-inorganic (sulfonated poly (ether ether ketone)/phosphated zirconia nanoparticles)composite were prepared by incorporating various ratios of phosphated zirconia nanoparticles (ZP) in sulfonated poly (etherether ketone) (SPEEK). SPEEK/ZP showed an improvement of properties compared with those of the parent SPEEK membrane.Key amongst these is increased proton conductivity to 0.02 S cm-1, reduced water uptake to 22 % and reduced methanol permeabilityto 1.13 x 10-7 cm2 s-1. The methanol permeability was decreased by 28 % compared with SPEEK membrane. It was decreased byone order of magnitude compared with commercial Nafion(R) 117 (1.39 x 10-6 cm2 s-1).


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