Preparation and recovery properties of homogeneous modified polysulfone plate affinity membrane chromatography with thiohydroxy as chelating groups. I. Synthesis and preparation of plate matrix membrane

Abstract

AbstractA chloromethylation polysulfone (CMPSF), having good properties of membrane formation, spinnability, and reactive groups, was synthesized with Friedel–Crafts reaction, which could be used as reactivity matrix membrane materials. The effects of ZnCl2 quantity, monochloro methyl ether quantity, reaction time, and reaction temperature on the chlorinity of CMPSF were investigated. The CMPSF plate matrix membranes were prepared with phase inversion by use of the CMPSF/additive/N,N′‐dimethylacetamide (DMAc) casting solution and CMPSF as membrane materials. The focus of this study was primarily concerned with the relationship among such factors as species and contents of additives, CMPSF content in casting solutions, and temperature of solutions, and the morphological structure of the membrane, pore size, porosity, and water flux of the membrane. It was concluded that these factors had obvious effects on the structure and the performance of the CMPSF matrix plate membrane, which could be improved within a wide range by changing the thermodynamic conditions of the casting solution. The effects of coagulation conditions on the microstructure and performance of CMPSF plate matrix membrane were also studied. It was found that the water flux of the CMPSF plate matrix membrane was at a maximum value by use of 10% DMAC solution as coagulation bath. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 96: 2117–2131, 2005