Tan Linli, Wang Yuqi, Li Mingpu
College of Intelligent Systems Science and Technology, Hubei Minzu University, Enshi 445000, China.
Key Laboratory of Green Manufacturing of Super-Light Elastomer Materials of State Ethnic Affairs Com, Enshi 445000, China.
Molecules. 2024 May 14;29(10):2302. doi: 10.3390/molecules29102302.
An interconnected sponge structure and porous surface poly (acrylonitrile-co-methyl acrylate) (P(AN-MA)) microfiltration membranes (MF) were fabricated via thermally induced phase separation (TIPS) by using caprolactam (CPL), and acetamide (AC) as the mixed diluent. When the ternary system was composed of 15 wt.% P(AN-MA), 90 wt.% CPL, and 10 wt.% AC and formed in a 25 °C air bath, the membrane exhibited the highest water flux of 8107 L/m·h. The P(AN-MA) membrane contained hydrophobic groups (-COOCH) and hydrophilic groups (-CN), leading it to exhibit oleophobic properties underwater and hydrophobic properties in oil. The membrane demonstrates efficient separation of immiscible oil/water mixtures. The pure water flux of the petroleum ether/water mixture measured 870 L/m·h, and the pure oil flux of the petroleum tetrachloride/water mixture measured 1230 L/m·h under the influence of gravity. Additionally, the recovery efficiency of diluents through recrystallization was 85.3%, significantly reducing potential pollution and production costs.
通过热致相分离（TIPS）法，以己内酰胺（CPL）和乙酰胺（AC）作为混合稀释剂，制备了具有相互连接的海绵结构和多孔表面的聚（丙烯腈 - 共 - 丙烯酸甲酯）（P(AN - MA)）微滤膜（MF）。当三元体系由15 wt.% 的P(AN - MA)、90 wt.% 的CPL和10 wt.% 的AC组成，并在25°C的空气浴中成型时，该膜表现出最高的水通量，为8107 L/m·h。P(AN - MA)膜含有疏水基团（-COOCH）和亲水基团（-CN），使其在水下表现出疏油性能，在油中表现出疏水性能。该膜对不互溶的油/水混合物具有高效的分离能力。在重力影响下，石油醚/水混合物的纯水通量为870 L/m·h，四氯化碳/水混合物的纯油通量为1230 L/m·h。此外，通过重结晶对稀释剂的回收效率为85.3%，显著降低了潜在污染和生产成本。
