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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 51: Focus Session: 75 Years Polymer Physics Division: From Curiosity to Smart Materials (joint session CPP/BP)

CPP 51.3: Topical Talk

Donnerstag, 12. März 2026, 16:15–16:45, ZEU/LICH

From block copolymer morphologies to functional polymer membranes — •Volker Abetz — Helmholtz-Zentrum Hereon, Institute of Membrane Research, Max-Planck-Str. 1, 21502 Geesthacht, Germany — University of Hamburg, Institute of Physical Chemistry, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany

Depending on solvent selectivity and the time of evaporation different structures can be obtained in cast block copolymers, showing that there is an interplay between kinetics and thermodynamic driving forces during the self-assembly before the sample is dry. When preparing membranes from block copolymer solutions, besides molecular weight, composition of the block copolymer and its concentration, also the choice of solvent, and the casting conditions play an important influence on the obtained morphology of the finally obtained membrane. This is especially important when membranes are prepared via the so-called non-solvent induced phase separation process after initial self-assembly by partial evaporation of solvent. The obtained membranes, when prepared successfully, display a rather isoporous top layer and can be subsequently post functionalized, in order to tune pore size and pore surface property. Different examples of the separation properties will be shown and also the potential use as a membrane reactor will be discussed.

Keywords: block copolymer; self-assembly; membrane