Isoporous block copolymer membranes are promising candidates for ultrafiltration by providing high porosity along with specific retention properties. We are interested in particular in so-called integral asymmetric membranes with an isoporous surface, as this type of membranes offers the portential to combine high flux with high selectivity and mechanical stability. An important issue is to understand the parameters controlling the structure formation of these membranes. While a reasonable amount of works has been published in the area of isoporous flat sheet membranes, a much smaller number of works have been done in the area of isoporous hollow fiber membranes from block copolymers using the nonsolvent induced phase separation, also known as “phase inversion” process. In this presentation an overview on parameters influencing the structure formation of these membranes will be given and a focus will be laid on different preparation techniques in flat sheet membranes and new developments in the area of hollow fiber membranes. The hollow fiber geometry of membranes is well-known to provide a higher effective surface area for lesser volume which is further higher for inside-out membranes as compared to outside-in.<br/>

Integral asymmetric isoporous flat sheet and hollow fiber membranes from block copolymers

254th National Meeting (2017)

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