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Controllable preparation of uniform polystyrene nanospheres with premix membrane emulsification

Authors

  • Zhendong Liu,

    1. State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
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  • Yangcheng Lu,

    Corresponding author
    1. State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
    • State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
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  • Man Zhang,

    1. College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
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  • Weiming Wan,

    1. State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
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  • Guangsheng Luo

    1. State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
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Abstract

The expansion of polymer nanosphere applications requires facile and versatile preparation techniques. In this study, combining circled premix membrane emulsification and thermally initiated miniemulsion polymerization, we developed a new strategy for preparing uniform polystyrene nanospheres within a duration as short as 1 h. The size of the nanospheres, ranging from 40 to 120 nm, was dependent on the premix membrane emulsification cycle number, the transmembrane flow rate, and the membrane pore size; this was almost consistent with characterizations of droplet size evolution. The coefficient of variation, around 15%, indicated that the size distribution of the nanospheres was still narrow, even as the monomer-to-water ratio was as high as 0.2. This method may be competitive for further applications because of its high production efficiency and low system requirements. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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