Polysulfone (PS) and polyethersulfone (PES) ultrafiltration membranes were manufactured from a casting solution of the polymer, polyvinylpyrrolidone (PVP) in various solvents [N,N-dimethylacetamide (DMAc), N,N-dimethylformamide (DMF) and 1-methyl-2-pyrrolidone (NMP)] by immersing the prepared films in different non-solvents [water, 2-butanol, mixture of water and 2-butanol, mixture of water and 2-propanol (IPA) and mixture of water and 1-butanol]. The influences of various solvents and non-solvents on morphology and performance of the prepared membranes were analyzed by scanning electron microscopy (SEM) and separation experiments using milk as the feed.
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Madaeni et al. (2005) studied this question.
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