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    Preparation and characterization of the antifouling porous membranes from poly(vinylidene fluoride)-graft-poly(N-vinyl pyrrolidone) powders

    Year: 2014

    Journal: NUCLEAR SCIENCE AND TECHNIQUES, Vol. 25, p -, 20150722

    Authors: Chen Li-Fang; Bian Xiao-Kai; Hou Zheng-Chi; Liu Zhong-Ying; Qin Qiang; Pan Ling; Shen Li-Guo; Shi Liu-Qing; Lu Xiao-Feng

    Organizations: Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; Univ Chinese Acad Sci, Beijing 100049, Peoples R China

    Porous membranes were prepared using the phase inversion method from poly(vinylidene fluoride)-graft-poly(N-vinyl pyrrolidone) (PVDF-g-PVP) powders, which were synthesized via gamma-ray induced graft polymerization (pre-irradiation). Chemical compositions, thermal behavior, morphology and hydrophilicity of the membranes were characterized by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, element analysis, thermalgravimetric analysis, differential scanning calorimetry, scanning electron microscopy and contact angle measurements, respectively. Permeation experiments were conducted to evaluate the water flux, and the dynamic BSA fouling resistance performances were investigated, too. All the experimental results indicate that the PVDF-g-PVP membranes demonstrate better separation performances over the pristine PVDF membrane.