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Membrane Water Treatment   Volume 10, Number 6, November 2019, pages 461-469
Enhancement of hydrophilicity and anti-fouling property of polysulfone membrane using amphiphilic nanocellulose as hydrophilic modifier
Xue Yang, Lifang Liu and Shuai Jiang

Abstract     [Buy Article]
    In the present work, we present a new effective hydrophilicity modifier for polysulfone (PSf) membrane. Firstly, amphiphilic nanocellulose (ANC) with different substitution degrees (SD) was synthesized by esterification reaction with nanocellulose (NC) and dodecyl succinic anhydride (DDSA). The SD and morphology of ANC were characterized by titration method and transmission electron microscopy (TEM). Then, the polysulfone (PSf)/ANC blend membranes were prepared via an immersion phase inversion method. The influence of SD on the morphology, structure and performances of PSf/ANC blend membrane were carefully investigated by Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), mechanical property test, contact angle measuring instrument and filtration experiment. The results showed that the mechanical property, hydrophilicity and anti-fouling property of all the PSf/ANC blend membranes were higher than those of pure PSf membrane and PSf/NC membrane, and the membrane properties were increased with the increasing of SD values. As ANC-4 has the highest SD value, PSf/ANC-4 membrane exhibited the optimal membrane properties. In conclusion, the prepared ANC can be used as an additive to improve the hydrophilicity and anti-fouling properties of polysulfone (PSf) membrane.
Key Words
    amphiphilic nanocellulose; Polysulfone (PSf) membrane; hydrophilic modification; anti-fouling; porous materials
Xue Yang: School of Fashion Technology, Shanghai University of Engineering Science, Shanghai 201620, China
Lifang Liu and Shuai Jiang: College of Textiles, Donghua University, Shanghai 201620, China

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