Abstract: Novel cellulose membranes were prepared by using amine oxides as its solvent. Steady-state gas permeation rates in a “water-swollen”α-cellulose membrane were measured at various temperatures.The function of water on α-cellulose membrane was also revealed by comparatively studying the gas permeability of cellulose acetate membrane, benzoylated cellulose membrane and polysulfone membrane in “dry” and “wet” state. The effect of swelling on permeability of α-membrane was studied in some details. The difference of gas permeability between “dry” and “water-swollen”α-cellulose membrane was investigated. The permeability of CO₂ was as high as 130 barrer［1 barrer=7.5×10^-14cm³(SPT)·cm·(cm²·s·Pa)^-1］; the separation factor of CO₂/H₂ can be up to 15.

Key words:

α-纤维素膜, 气体渗透, 膜含水量, 溶解-扩散, CO₂/H₂

摘要： 制备了α-纤维素膜并对其气体分离性能进行了研究.测定了水溶胀下，CO₂、H₂、CH₄、N₂、O₂等气体在α-纤维素膜内的气体渗透速率.通过比较研究醋酸纤维素膜、苯甲酰化纤维素膜和聚砜膜在干态和湿态下的气体渗透性能，揭示了水对α-纤维素膜气体渗透性能的作用规律.

关键词:

α-纤维素膜, 气体渗透, 膜含水量, 溶解-扩散, CO₂/H₂