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甲醇／ 甲基叔丁基醚的分离是目前具有实用意义的重要研究课题之一，采用气流吹扫式操作，研究了聚酰亚胺、不同结构的聚砜中空纤维膜在不同操作条件下，对甲醇／ 甲基叔丁基醚气相混合体系的分离性能，也研究共混改性对分离膜性能的影响。结果表明，各种材料的膜具有相近的分离行为，即随着气相中甲醇含量的增加，透过通量逐渐增大而分离系数逐渐减小，聚酰亚胺膜具有适中的透过通量，但具有很高的分离系数，在甲醇浓度低于２０ ％ 时，分离系数可达数千。采用聚醚砜共混改性的聚酰亚胺膜在未明显降低透过通量的条件下，使醇／ 醚分离系数大幅度提高，有很好的应用前景。
Methanol / methyl tert-butyl ether separation is currently one of the important research topics of practical significance, the use of airflow purge operation, the polyimide, different structure of the polysulfone hollow fiber membrane in different operating conditions, Methanol / methyl tert-butyl ether gas-phase separation performance of the system, but also study the impact of blending modification on the performance of the separation membrane. The results showed that the membranes of various materials had similar separation behavior. With the increase of methanol content in the gas phase, the permeation flux gradually increased and the separation coefficient decreased gradually. The polyimide membranes had moderate permeation flux , But with a high separation factor of up to thousands when the methanol concentration is below 20%. Polyethersulfone blend modified polyimide film without significantly reducing the permeate flux conditions, the alcohol / ether separation coefficient greatly improved, and has good application prospects.