再生纤维素分离膜具有高度亲水性、良好耐污染性，尤其是在环境中具有生物降解性，对发展我国膜分离工业和保护环境都具有重要意义。本文分别以脱脂棉、微晶纤维素和精制棉为原料，以[amim ]Cl作为溶剂，制备再生纤维素膜，并将所制得的纤维素膜用于超滤试验。

Regenerated cellulose separation membrane has a highly hydrophilic and good anti-fouling characteristic,and especially,is biodegeneradable in nature.The studies on its preparation and application are very important to the development of membrane separation industry and the environmental protection in our country. Regenerated cellulose membranes were prepared by using cotton,microcrystalline cellulose and refined cotton.Cellulose membranes were formed directly by casting of cellulose solution of [amim ]Cl and then coagulation.The cellulose membranes were investigated in ultrafiltration experiments.