Abstract: A novel solvent N-methylmorpholine-N-oxide (NMMO) is used in the Lyocell process of textile industry to physically dissolve cellulose.Chemical degradation of cellulose can be avoided so the natural characteristics of cellulose are satisfactorily preserved.A novel cellulose membrane was developed with NMMO as solvent.The prepared novel cellulose membrane has application potentials in such areas as acidic gases permeation and separation in water-swollen state; high and stable SO₂ permeation performance after being added sulfoxide-containing group by chemical modification; excellent fouling resistance ability during water-oil separation because of its strong hydrophilicity.

摘要： 借鉴纺织行业Lyocell纤维制备过程中采用的溶解方法，以N-甲基吗啉-N-氧化物（NMMO）为溶剂物理溶解纤维素，制备出了新型纤维素膜，并对其性能进行了测试.结果表明通过溶剂法制备的新型纤维素膜，应用潜力主要表现在3个方面：在湿态条件下对酸性气体具有较好的渗透性能；经过改性加入亚砜基团的纤维素膜对SO₂表现出较高且稳定的渗透性；因为纤维素的强亲水性，该膜应用于油水分离，其耐污染能力较强.