Abstract
Amphiphilic diblock and triblock copolymers are interesting candidates for membranes with controlled pore size and functionality, which can be applied for ultra- or nanofiltration. In this presentation the preparation of so-called integral asymmetric isoporous membranes using the non-solvent induced phase separation will be discussed for flat sheet and hollow fiber geometry. Different approaches to reduce the minimum of required amount of block copolymer for membrane preparation will be presented.
The influence of different processing parameters like concentration of the block copolymer in the casting or dope solution, the choice of solvent mixture, and the evaporation time before immersion of the block copolymer solution film or fiber into the immersion will be discussed. Also the possibility to apply an external field directing the orientation of the forming pores in the membrane will be shown.
The potential of these novel membranes for the selective retention or separation will be demonstrated on the example of dyes and proteins.
