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Membrane Innovation in Dialysis
Abstract:
Despite advances in renal replacement therapy, the adequate removal of uremic toxins over a broad molecular weight range remains one of the unmet needs in hemodialysis. Therefore, membrane innovation is currently directed towards enhanced removal of uremic toxins and increased membrane permeability. This chapter presents a variety of opportunities where innovation is brought into dialysis membranes. It covers the membrane formation from solution, describing different approaches to control the phase inversion process through additives that either swell in the polymer solution or influence the pore shrinkage during the membrane drying process. Additionally, large-scale manufacturing is described, and the influence of raw materials, spinning, and drying processes on membrane selectivity are presented. Finally, new characterization methods developed for the latest innovations around the application of membranes in dialysis are discussed, which allow the membrane performance for removal of a broad range of uremic toxins and the expected albumin loss in clinical use.
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