| http://www.w3.org/ns/prov#value | - The glass transition temperature of the organic base polymer of such a membrane is higher than the operating temperature of the fuel cell and is preferably at least 150??? C., more preferably at least 160??? C. and very particularly preferably at least 180??? C. Such membranes are used as separation membranes for ultrafiltration, gas separation, pervaporation, nanofiltration, microfiltration or ha
|
