Forced convection spinning of gas separation hollow fibre membranes: some underlying factors, mechanisms and effects

被引：13
|
作者：
Gordeyev, SA [1 ]
Shilton, SJ [1 ]
机构：
[1] Univ Strathclyde, Dept Chem & Proc Engn, Glasgow G1 1XJ, Lanark, Scotland
来源：
JOURNAL OF MEMBRANE SCIENCE | 2004年 / 229卷 / 1-2期
基金：
英国工程与自然科学研究理事会;
关键词：
gas separation hollow fibre membranes; forced convection spinning; relaxation time; molecular orientation; mass transfer modelling;
D O I：
10.1016/j.memsci.2003.10.032
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Forced convection spinning of polysulfone gas separation hollow fibre membranes was investigated. Spinneret geometry, spinning solution composition, extrusion shear, bore fluid rate, and forced convection residence time and gas rate were considered. A mass transfer model of the forced convection process was developed to help understand the effect of spinning conditions on membrane properties. Membrane pressure-normalised fluxes, selectivities and bursting pressures were discussed in terms of this new model and in terms of induced molecular orientation, polymer solution relaxation time, phase inversion (in particular skin formation) and membrane fine structural details as deduced by resistance modelling of gas transmission. (C) 2003 Elsevier B.V. All rights reserved.
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页码：225 / 233
页数：9
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