Preparation of a heterogeneous hollow-fiber affinity membrane modified with a mercapto chelating resin

被引：0
|
作者：
Wang, Bing [1 ]
Huang, Lei [1 ]
Xiao, Feng [1 ]
Liu, Wei [1 ]
Jiang, Xipeng [1 ]
机构：
[1] Key Lab. of Hollow-Fiber Membrane Materials and Membrane Processes of the Ministry of Education, School of Materials Science and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, China
来源：
Journal of Applied Polymer Science | 2007年 / 105卷 / 03期
关键词：
A high-quality; heterogeneous hollow-fiber affinity membranes modified with mercapto was prepared through phase separation with blends of a chelating resin and polysulfone as membrane materials; poly(ethylene glycol) as an additive; N; N-dimethylacetamide as a solvent; and water as an extraction solvent. The effects of the blending ratio and chelating resin grain size on the structure of the hollow-fiber affinity membrane were studied. The effects of the composition of the spin-cast solution and process parameters of dry-wet spinning on the structure of the heterogeneous hollow-fiber affinity membrane were investigated. The pore size; porosity; and water flux of the hollow-fiber affinity membrane all decreased with an increase in the additive content; bore liquid; and dry-spinning distance. With an increase in the extrusion volume outflow; the external diameter; wall thickness; and porosity of the hollow-fiber affinity membrane all increased; but the pore size and water flux of the hollow-fiber affinity membrane decreased. It was also found that the effects of the internal coagulant composition and external coagulant composition on the structure of the heterogeneous hollow-fiber affinity membrane were different. The experimental results showed that thermal drawing could increase the mechanical properties of the heterogeneous hollow-fiber affinity membrane and decrease the pore size; and water flux of the heterogeneous hollow-fiber affinity membrane; and the thermal treatment could increase the homogeneity and stability of the structure of the heterogeneous hollow-fiber affinity membrane. ©2007 Wiley Periodicals; Inc;
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页码：1687 / 1699
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