NMMO法纺制纤维素中空纤维膜工艺的研究  

Study on process of spinning cellulose hollow fiber membrane with NMMO method

作　　者：宋俊[1] 程博闻[1] 林璇[1] 若立[1] 

机构地区：[1]天津工业大学材料科学与化学工程学院,天津300160

出　　处：《天津工业大学学报》2004年第4期14-17,共4页Journal of Tiangong University

基　　金：国家自然科学基金资助项目 (50 1 73 0 1 9)

摘　　要：讨论了纤维素溶液的纺丝工艺参数———凝固浴温度、挤出速率、干纺程、芯液流量、致孔剂对纤维素中空纤维膜性能的影响,分析了膜的结构形态.结果发现,凝固浴温度低于10℃时,膜结构致密;随着浴温的逐步升高,膜结构变得疏松;挤出体积流量增大时,中空纤维的外径、壁厚均增大,而水通量、孔隙率减小;与此同时,干纺程、芯液流量、致孔剂含量的增加,均导致膜的水通量和孔隙率增加.The influence of spinning parameters of cellulose solution such as coagulation bath temperatures, extruding rate, dry-spinning path, bore flow rate, and additives on cellulose hollow fiber membrane are described. The membrane morphology is analysed. Some conclusions have been drawn. The structure of membrane is compact when the coagulation bath temperature is below 10 ℃, but the structure of it is loose with the coagulation bath temperature increasing; The outside layer diameter and membrane wall thickness of the hollow fibers increase, the porosity and flux decrease when extruding volumn flux increases. At the same time, the membrane flux and porosity increase with dry-spinning path, bore flow rate and additives increasing.

关 键 词：纤维素 中空纤维膜 膜性能 

分 类 号：TS102.54[轻工技术与工程—纺织工程]