Potential of flat sheet PEEK membranes, produced by random hard templating process

M. Loepfe*, C. Kellenberger, Novamem Ltd., Switzerland

Novamem is a Swiss producer of flat sheet filtration membranes made from high performance polymers. We offer free-standing membranes with cut of sizes ranging from the micrometer to the nanometer scale. Our expertise lies in processing even very specific polymers to form porous membranes. Our flagship products are flat sheet membranes made from PEEK. Such membranes are currently evaluated for harsh solvent filtration at high temperatures, as well as for separators in the battery industry.

The interest in using membrane filtration under harsh conditions has grown tremendously during the last years. Especially in industries, where solvents are processed or separated, this new technology is considered to be of great interest. Organic solvent nanofiltration (OSN) is currently being investigated for use in the production of active pharmaceutical ingredients (API). On the other hand, new chemistry applied in batteries and fuel cells asks for highly temperature stable and solvent resistant membranes. Polymer membranes are known to have fair advantages to other membrane types (i.e. ceramic membranes) because they can be exchanged without substantial replacement costs. However, most of today’s polymer membranes do not tolerate harsh, non-aqueous environments such as aromatic or chlorinated solvents and cannot be used at elevated temperatures.

For the first time, Novamem demonstrates production and use of chemically resistant and thermally stable membranes from unmodified polyether ether ketone (PEEK). These proprietary membranes are produced by the patented process of random hard template removal, allowing the manufacturing of membranes based on a large variety of polymers (PEEK, CA, PES, PVDF, PE).[3] Commercially available Novamem PEEK membranes do have cut of sizes down to 5 nm and can even be produced as thin film composite (TFC) membranes. The picture illustrates such a PEEK TFC membrane....

Session: M1 - New Membranes I
Day: 14 March 2018
Time: 09:00 - 10:15 h

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