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Preparation of a novel phthalimidomethylated polysulfone/unmodified polysulfone blend affinity membrane and applications for removal of p-nitrophenol

Authors

  • Yanwei Sun,

    1. State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, China
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  • Bing Wang

    Corresponding author
    1. State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, China
    • State Key Laboratory of Hollow Fiber Membrane Materials and Processes, School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, China
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Abstract

A novel phthalimidomethyl polysulfone (PIPSf)/polysulfone(PSf) blend affinity membrane was prepared and applied for the removal of p-nitrophenol from aqueous solutions. In this work, the chloromethylated polysulfone (CMPSf) was used to introduce phthalimido groups onto the polysulfone backbone by Gabriel reaction. The polymers can be easy to phthalimidomethylate to different degrees by control of the reaction temperature and time. Structures of the resulting polymers were confirmed by FT-IR. The obtained polymers showed good solubility in dimethylformamide, dimethylacetamide and formed the affinity membrane blending with polysulfone at different blend compositions by the phase-inversion method. Thus the properties of films were characterized with respect to water flux, pore size, and porosity. The surface and cross-sectional views of the blend membranes were analyzed by scanning electron microscopy (SEM). The research on treatment of removal p-nitrophenol was carried out by affinity membrane process. The adsorption capacity increased with increasing the initial concentration of p-nitrophenol in aqueous solution, and the adsorption isotherm fitted the Freundlichmodel well. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

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