Yan Jiangyi, Nie Lihong, Li Guiliang, Zhu Yuanlu, Gao Ming, Wu Ruili, Wang Beifu
College of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316000, China.
Sichuan Bureau of National Food and Strategic Reserves Administration, Chongqing 401326, China.
Polymers (Basel). 2022 Apr 22;14(9):1706. doi: 10.3390/polym14091706.
Polyamide 66 microporous membranes were prepared by cold non-solvent-induced phase separation using polyamide 66-formic acid-propylene carbonate as a ternary membrane-forming system. The formed membranes exhibited a special bicontinuous structure consisting of interglued spherical crystals or interlocked bundles of microcrystalline aggregates. The variation of the microporous structure under the influence of preparation conditions, solvent, aging time, and polymer concentration affects the comprehensive performance of the membranes. For example, the cold-induced operation and the use of different membrane-forming solvents contributed to the crystallization of polyamide 66, resulting in an increased contact angle of polyamide 66 membranes, obtaining a high resistance to contamination of up to 73.5%. Moreover, the formed membranes still have high mechanical strength.
以聚酰胺66-甲酸-碳酸丙烯酯为三元制膜体系，通过冷非溶剂诱导相分离法制备了聚酰胺66微孔膜。所形成的膜呈现出一种特殊的双连续结构，由相互胶合的球形晶体或微晶聚集体的互锁束组成。制备条件、溶剂、老化时间和聚合物浓度影响下的微孔结构变化会影响膜的综合性能。例如，冷诱导操作和使用不同的制膜溶剂有助于聚酰胺66的结晶，导致聚酰胺66膜的接触角增大，获得高达73.5%的高抗污染性。此外，所形成的膜仍具有较高的机械强度。
