%0 conference lecture (invited) %@ %A Abetz, V. %D 2020 %J 8th Biannual International Conference on “Frontiers in Chemical Sciences" - Chem 08 %T Development of polymer membranes in Geesthacht: a contribution to a sustainable society %U %X In this contribution a few highlights in the material development of polymer membranes will be presented. On one side these will be block copolymers as candidates for a new generation of ultrafiltration membranes and on the other side dense microphase separated multiblock copolymer membranes and membranes obtained from thermally rearranged polymers for gas separation will be presented.