Heavy Ion Track-Etching of PEEK Membranes
نویسندگان
چکیده
Heavy ion tracks in polymer membranes can be transformed into microand nano-channels by means of wet-chemical etching. Up to now most commonly polycarbonate (PC), polyethylene therephthalate (PET) and polyimide (PI) membranes were employed for this purpose. For some applications such as proton conductive membranes for fuel cells, high resistance of the material against heat and solvents as well as good electric insulation are required. Among the polymeric materials, polyetheretherketone (PEEK) exhibits all the properties mentioned above. Furthermore, it has been demonstrated that the surface of PEEK can be chemically modified, using hydroxyl groups as a starting point [1]. Applying this kind of surface chemistry inside etched nanochannels would allow the introduction of additional functionality in the PEEK membrane.
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