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首页> 外文期刊>Journal of Applied Polymer Science >Hemodialysis membrane prepared from cellulose/N-methylmorpholine-N-oxide solution. II. Comparative studies on the permeation characteristics of membranes prepared from N-methylmorpholine-N-oxide and cuprammonium solutions
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Hemodialysis membrane prepared from cellulose/N-methylmorpholine-N-oxide solution. II. Comparative studies on the permeation characteristics of membranes prepared from N-methylmorpholine-N-oxide and cuprammonium solutions

机译：由纤维素/ N-甲基吗啉-N-氧化物溶液制备的血液透析膜。二。 N-甲基吗啉-N-氧化物与铜铵溶液制备膜的渗透特性比较研究

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摘要

Two kinds of regenerated cellulose membranes for hemodialysis were prepared from casting solutions of N-methylmorpholine-N-oxide (NMMO) and cuprammonium (denoted NMMO membranes and cuprammonium membranes, respectively). The concentration of cellulose in the casting solution investigated was 6-8 wt %. The permeation characteristics of both membrane series were compared in terms of the ultrafiltration. rate (UFR) of pure water, the sieving coefficient (SC) of dextran, and the solute permeabilities of urea, creatinine, and vitamin B-12. The UFR and SC of the NMMO membranes were strongly affected by the cellulose concentration of the casting solution, and NMMO was a preferable solvent for the production of cellulose membranes with high performance; the cuprammonium solution gave low-performance membranes. The pore structures of both types of membranes were estimated with the Hagen-Poiseuille law. The results showed that the NMMO membranes had larger pore radius and smaller pore numbers than the cuprammonium membranes. The differences in the membrane pore structures led to the differences in the performance between the two membrane series. (C) 2003 Wiley Periodicals, Inc. [References: 28]
机译：从N-甲基吗啉-N-氧化物（NMMO）和铜铵的浇铸溶液中制备了两种用于血液透析的再生纤维素膜（分别表示为NMMO膜和铜铵膜）。研究的流延溶液中纤维素的浓度为6-8重量％。在超滤方面比较了两个膜系列的渗透特性。纯水的比率（UFR），右旋糖酐的筛分系数（SC）以及尿素，肌酐和维生素B-12的溶质渗透率。 NMMO膜的UFR和SC受到流延溶液中纤维素浓度的强烈影响，并且NMMO是用于生产高性能纤维素膜的优选溶剂。铜铵溶液产生的膜性能低下。两种类型的膜的孔结构均通过哈根-泊苏伊尔定律进行估计。结果表明，NMMO膜比铜膜具有更大的孔径和较小的孔数。膜孔结构的差异导致两个膜系列之间性能的差异。 （C）2003 Wiley Periodicals，Inc. [参考：28]

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