以纤维素为原料,N-甲基吗啉-N-氧化物(简写NMMO)为溶剂,采用L-S相转化法制备非对称纤维素膜.研究了刮膜速度对膜结构及性能的影响,实验结果表明:随着刮膜速度提高,膜平均粗糙度降低、孔径变小、结晶度增加、纵横向取向度增加;膜的水通量、透明度降低,截留率、拉伸强度增强.
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