High throughput study of phase inversion parameters for polyimide-based SRNF membranes

Study of glassy polymers fractional accessible volume (FAV) by extended method of hydrostatic weighing: Effect of porous structure on liquid transport

“…The difference between the last two groups is that the microporous structure of a selective layer made of conventional glassy polymers (polyamides, polyimides, polysulfones etc.) is artificially formed by immersion precipitation, and nanofiltration performance of this type of NF membrane strongly depends on the conditions of the phase inversion process [20]. At the same time, high free volume glassy polymers (e.g.…”

Optimization of solvent resistant nanofiltration membranes prepared by the in-situ diamine crosslinking method

“…Such a high-throughput optimization of many combined parameters has already been successfully carried out for other membrane systems by use of genetic algorithms [44][45][46][47][48][49][50]. …”

Recent Advances in Polymeric Solvent‐Resistant Nanofiltration Membranes

“…[19][20][21]46,55,56 P84 and Matrimid R are two types of commercial PI products that have been widely used to fabricate SRNF membranes. [19][20][21][22]46,47,52,55,[57][58][59][60] The PI should be dissolved in polar solvents such as DMAc, N-methyl-2-pyrrolidone (NMP), and DMSO to form a homogeneous doping solution and optimize performance. The doping solution is then degassed before casting on a nonwoven support.…”

“…This solution typically consists of 40 vol% toluene, 40 vol% 2-methyl-4-pentanone, and 20 vol% mineral oil. 57,58 Finally, PI SRNF membranes should be thermally treated for approximately 1 h in a vacuum oven at 65°C to enhance the separation performance. 55,57,58,60 Soroko et al [19][20][21] have published numerous valuable studies on membrane formation parameters, such as the composition of the doping solution, the evaporation step, and the physical and chemical properties of PI materials.…”

“…20,21 Traditionally, evaporation prior to immersion in a water bath is considered a necessary step to fabricate SRNF membranes. 18,52,57,61 Soroko's 20 pioneering work indicated that longer evaporation times to completely evaporate the solvent can reduce the flux without improving the rejection of SRNF membranes. Similar results have also been observed in other studies.…”