Polysulfone (PSf) membrane by treated NMP solvents with water forces was studied for pore control and separation of sodium alginate. For the preparation of modified PSf membranes, it was exposed to specific solvents and then treated by water-forces. PSf membrane treated only with NMP could show the separation of sodium alginate above 6 bar since the pore-size was not proper for water transport. However, the membrane treated with NMP and water forces showed the separation performance of sodium alginate from 2 bar. Furthermore, the highest flux (211 L/m 2 h) and rejection (99.3%) at 8 bar was observed. FT-IR and TGA analysis showed no chemical or physical changes after NMP and exposure to water forces. The modified pore size in polysulfone membrane was confirmed by the porosimeter.

中文翻译：

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通过 NMP 浸渍法和水压轻松控制孔隙

研究了用水力处理过的 NMP 溶剂的聚砜 (PSf) 膜对海藻酸钠的孔控制和分离。为了制备改性 PSf 膜，将其暴露在特定溶剂中，然后用水力处理。仅用 NMP 处理的 PSf 膜可以显示高于 6 bar 的海藻酸钠分离，因为孔径不适合水传输。然而，用 NMP 和水力处理的膜显示出海藻酸钠从 2 bar 的分离性能。此外，在 8 巴下观察到最高通量 (211 L/m 2 h) 和拒绝率 (99.3%)。FT-IR 和 TGA 分析显示在 NMP 和暴露于水力后没有化学或物理变化。聚砜膜中改性后的孔径由孔隙率计确定。