Synthesis and properties of polyacrylamide/hollow coal gangue spheres superabsorbent composites

Authors

  • Yang Li,

    1. School of Materials Science and Engineering, North University of China, Taiyuan, People's Republic of China
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  • Nana Ren,

    1. School of Materials Science and Engineering, North University of China, Taiyuan, People's Republic of China
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  • Yanzhong Wang,

    Corresponding author
    • School of Materials Science and Engineering, North University of China, Taiyuan, People's Republic of China
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  • Jin Huang,

    1. School of Materials Science and Engineering, North University of China, Taiyuan, People's Republic of China
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  • Wei Liu,

    1. School of Materials Science and Engineering, North University of China, Taiyuan, People's Republic of China
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  • Zhenguo Su,

    1. State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, People's Republic of China
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  • Jinlong Yang

    1. School of Materials Science and Engineering, North University of China, Taiyuan, People's Republic of China
    2. State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, People's Republic of China
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Correspondence to: Y. Wang (E-mail: wyzletter@hotmail.com)

ABSTRACT

Polyacrylamide/hollow coal gangue spheres (PAM/HCGS) superabsorbent composites were prepared by in situ aqueous solution polymerization using N,N′-methylenebisacrylamide (MBA) as a crosslinker and ammonium persulfate (APS) as an initiator. PAM/HCGS composites exhibit the good water and salt absorption with 5 wt % HCGS, 0.14 wt % crosslinker, and 0.56 wt % initiator. Water retention of PAM/HCGS (5 wt %) retains 43% at 60°C for 24 h, which is much better than that of pure polyacrylamide. It suggests that the addition of HCGS increase the strength of swollen gel. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 2184–2187, 2013

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