POLYSULFONE MEMBRANES .2. PERFORMANCE COMPARISON OF POLYSULFONE-POLY-(N-VINYL-PYRROLIDONE) MEMBRANES

被引:22
作者
TAM, CM [1 ]
TWEDDLE, TA [1 ]
KUTOWY, O [1 ]
HAZLETT, JD [1 ]
机构
[1] UNIV WESTERN ONTARIO,FAC ENGN SCI,DEPT CHEM & BIOCHEM ENGN,LONDON N6A 5B9,ONTARIO,CANADA
基金
英国医学研究理事会;
关键词
D O I
10.1016/0011-9164(93)80142-A
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The characteristic behaviour of the polysulfone (PSF), poly-(N-vinyl-pyrrolidone) (PVP), N-methyl-2-pyrrolidinone (NMP) ultrafiltration membrane casting solution system was investigated. Solutions containing different weight percentages of PSF and PVP were prepared. Zero-shear casting solution viscosities were determined. Membranes were then cast using the phase inversion technique and characterized by a series of separation experiments using polyethylene glycols of varying molecular weights as test solutes. A simple pore flow model was fitted to the resulting separation data to provide estimates of the average pore radius. The resistance to fluid transport for a given membrane pore radius was described by the ratio of the number of pores per unit membrane area to the effective pore length. These two parameters were used to compare the performance of laboratory cast polysulfone membranes with data for several commercial products.
引用
收藏
页码:275 / 287
页数:13
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