【摘要】 选用聚醚共聚酰胺（Pebax1657）和1-丁基-3-甲基咪唑六氟磷酸盐（[Bmim][PF₆]）为膜材料,以1-丁醇为溶剂,通过流延成膜法制备Pebax1657/[Bmim][PF₆]共混膜.FTIR和XRD分析结果表明,[Bmim][PF₆]的引入,破坏了Pebax1657链段间原有的氢键,造成共混膜结晶度降低;而随着[Bmim][PF₆]质量分数的增加,N₂、CH₄、H₂和CO₂渗透系数逐渐降低.温度、压力和[Bmim][PF₆]的含量对Pebax1657/[Bmim][PF₆]共混膜的N₂、CH₄、H₂和CO₂渗透性能的影响表明,随着操作压差变化,CO₂和非极性气体的渗透系数呈现不同的变化趋势;N₂、CH₄、H₂和CO₂的渗透系数都随着温度的升高而增大,且它们的渗透活化能随着[Bmim][PF₆]含量的增加呈增加趋势.更多还原

【Abstract】 In this paper,Pebax1657/1-butyl-3-methylimidazolium hexafluorophosphate（[Bmim][PF₆]）blend membranes with different content of[Bmim][PF₆]were prepared via solution casting and solvent evaporation method.Physical properties of blend membranes were characterized by Fourier Transform Infrared Spectroscopy（FTIR）and X-ray diffraction（XRD）.Results indicated that the hydrogen bond was destroyed,and the crystallization ability decreased.The effects of [Bmim][PF₆]content,operating temperature and pressure on the gas（N₂,CH₄,H₂ and CO₂）permeabilities were evaluated.With the increase of[Bmim][PF₆]content,the permeabilities of N₂,CH₄,H₂ and CO₂ decreased.The effect of pressure on the CO₂ and non-polar gas permeabilities was different.With the increase of temperature,the permeabilities of N₂,CH₄,H₂ and CO₂increased,similarly,the apparent activation energies of N₂,CH₄,H₂ and CO₂increased.更多还原