高性能气体分离聚苯胺膜

系统论述了聚苯胺自支撑膜和复合膜对气体的分离性能。聚苯胺自支撑膜、聚苯胺 /尼龙、聚苯胺 /氧化铝复合膜经去掺杂尤其是二次掺杂后 ,气体分离系数会显著提高 ,而透气系数略有提高。二次掺杂态聚苯胺自支撑膜和复合膜都具有极高的氧氮分离性能 ,已超过了一般聚合物材料的上限 ,最优异的聚苯胺膜的氧氮选择分离系数可达 30 ,它在包括有高选择性能膜材料聚酰亚胺、聚吡咙、聚三唑等在内的所有聚合物膜中排行第一 ,对空气分离显示出极大优势。预计聚苯胺复合膜及纳米膜在医疗保健等领域具有很大应用潜力

High-performance polyaniline membranes for gas separation

The gas separation performance of free standing and composite polyaniline membranes are generally reviewed.The gas selectivity coefficients of the free standing polyaniline membrane,polyaniline/nylon,polyaniline/alumina composite membranes will be significantly enhanced while the permeability coefficients are increased slightly after being treated by undoping,especially by the second doping step.The free standing and composite polyaniline membranes treated by the second doping show extremely high selectivity coefficient for oxygen over nitrogen.Their perm selectivity has exceeded the top limit of other general polymer materials.Their highest selectivity coefficient for oxygen over nitrogen can reach 30.Polyaniline ranks the first among the available high selectivity membrane materials including polyimide,polypyrrolone and polytriazole.Polyaniline membrane has shown predominance for air separation.It is forecast that polyaniline composite membranes and nanometer membranes have important potential of application in the areas such as medical and health protection.