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Stability of acrylic acid grafted poly(vinylidene fluoride) hollow fiber membrane prepared by high-energy electron beam

Authors

  • Zhiyun Kong,

    Corresponding author
    1. State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic University, Tianjin, China
    2. School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin, China
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  • Junfu Wei,

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

    1. State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic University, Tianjin, China
    2. School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin, China
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  • Zian Luo,

    1. State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic University, Tianjin, China
    2. School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin, China
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  • Kongyin Zhao,

    1. State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic University, Tianjin, China
    2. School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin, China
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  • Xiaolei Wang

    1. State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic University, Tianjin, China
    2. School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin, China
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ABSTRACT

In this article, poly(vinylidene fluoride) (PVDF) hollow fiber membrane and acrylic acid (AA) were co-irradiated by high-energy electron beam to introduce hydrophilic carboxylic groups on the membrane surface. Thermal capability, mechanical performance, pore size, and permeation property were investigated to determine the stability of the membrane pore structure before and after irradiation polymerization. The decomposition temperature, melting point, glass transition temperature, and breaking force of the PVDF-g-AA membrane increased slightly because of irradiation grafting polymerization. After 15 months of storage, the pore size distribution of the PVDF-g-AA membrane became smaller and more dispersive. The pure water flux and the rejection to bovine serum albumin of the PVDF-g-AA membrane increased significantly with the increase in hydrophilicity and decrease in pore size. The results indicated that the structure and properties of the PVDF hollow fiber membrane were stable after high-energy electron beam irradiation grafting polymerization, even after 15 months of storage. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 41165.

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