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以间苯二胺(MPD)和分子笼(Cage)为水相单体,均苯三甲酰氯(TMC)为油相单体,聚丙烯腈(PAN)超滤膜为支撑层,通过界面聚合法制备了分子笼/聚酰胺复合纳滤膜。Cage在膜中具有良好的分散性,随着Cage质量分数的增加,复合膜的水通量和对无机盐截留率都明显提高,当其质量分数为1%,在压力为0.5 MPa下,对于1 g/L的Na_2SO_4溶液的通量为26.33L/(m~2·h),截留率达到89.3%,且分离性能可保持长期稳定。在连续运行60 min后,对牛血清蛋白(BSA)的通量仍可达到14.49 L/(m~2·h)。
Using MPD and Cage as the water phase monomers, trimesoyl chloride (TMC) as the oil phase monomer and polyacrylonitrile (PAN) ultrafiltration membrane as the support layer, the interfacial polymerization A molecular cage / polyamide nanofiltration membrane was prepared. Cage has good dispersibility in the membrane. With the increase of Cage mass fraction, the water flux of the composite membrane and the rejection of inorganic salts are obviously improved. When the mass fraction of Cage is 1% and the pressure is 0.5 MPa, The flux of 1 g / L Na_2SO_4 solution was 26.33 L / (m ~ 2 · h), the rejection rate reached 89.3%, and the separation performance could maintain long-term stability. After continuous operation for 60 min, the flux of bovine serum albumin (BSA) could reach 14.49 L / (m ~ 2 · h).