Robust P84 and NH₂-MWCNT/P84 hollow fiber membranes have been designed by adjusting spinning parameters and then crosslinking them by 1,6-hexanediamine to achieve desirable separation performance for organic solvent nanofiltration (OSN). A weak bore fluid, an adequately high dope flow rate and a small air gap length were required to produce the desired hollow fiber membranes. Compared the neat P84 hollow fiber, the addition of NH₂-MWCNTs into P84 resulted in an amidation reaction between the imide groups of P84 and the amine groups of NH₂-MWCNTs, leading to greater mechanical properties and thermal stability as well as higher dope viscosity. Moreover, NH₂-MWCNT/P84 hollow fibers exhibited great permeances of 4.31, 2.26, 1.45, and 1.17 LMH/bar for acetone, methanol, ethyl acetate, and ethanol, respectively, while having smaller pore sizes with notable rejections. The crosslinked P84 and NH₂-MWCNT/P84 membranes showed extraordinary rejections of 97.2, and 99.8% to methylene blue (320 g/mol), respectively. Also, the newly developed hollow fibers demonstrated great potential for separating tetracycline/IPA, L-α-lecithin/hexane, and BINAP-Ru(II)/methanol solutions, representing their applicability in the pharmaceutical, food, and petrochemical industries.

通过调节纺丝参数，然后通过1,6-己二胺交联，设计出坚固的P84和NH ₂ -MWCNT / P84中空纤维膜，以实现有机溶剂纳米过滤（OSN）所需的分离性能。为了生产所需的中空纤维膜，需要使用弱孔流体，足够高的浓液流速和较小的气隙长度。与纯净的P84中空纤维相比，向P84中添加NH ₂ -MWCNTs会导致P84的酰亚胺基团与NH ₂ -MWCNTs的胺基团之间发生酰胺化反应，从而导致更高的机械性能和热稳定性以及更高的掺杂粘度。此外，NH ₂-MWCNT / P84中空纤维对丙酮，甲醇，乙酸乙酯和乙醇的渗透率分别为4.31、2.26、1.45和1.17 LMH / bar，同时具有较小的孔径和明显的截留率。交联的P84和NH ₂ -MWCNT / P84膜对亚甲基蓝（320 g / mol）的排斥率分别为97.2和99.8％。而且，新开发的中空纤维在分离四环素/ IPA，L-α-卵磷脂/己烷和BINAP-Ru（II）/甲醇溶液方面显示出巨大的潜力，这表明它们在制药，食品和石化行业中的适用性。