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A Novel N-Succinylchitosan-graft-Polyacrylamide/Attapulgite Composite Hydrogel Prepared through Inverse Suspension Polymerization

Authors

  • Ping Li,

    1. Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P.R. China
    2. Graduate University of the Chinese Academy of Sciences, Beijing, 100049, P.R. China
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  • Junping Zhang,

    1. Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P.R. China
    2. Graduate University of the Chinese Academy of Sciences, Beijing, 100049, P.R. China
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  • Aiqin Wang

    Corresponding author
    1. Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P.R. China
    • Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P.R. China. Fax: +86 931 8277088
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Abstract

A novel N-succinylchitosan-graft-polyacrylamide/attapulgite composite hydrogel was prepared by using N-succinylchitosan, acrylamide and attapulgite through inverse suspension polymerization. The result from FTIR spectra showed that [BOND]OH of attapulgite, [BOND]OH and [BOND]NHCO of N-succinylchitosan participated in graft polymerization with acrylamide. The introduced attapulgite could enhance thermal stability of the hydrogel. Scanning electron microscopy observation indicates that the composite hydrogel has a microporous surface. The volume ratio of heptane to water, weight ratio of acrylamide to N-succinylchitosan and attapulgite content have great influence on swelling ability of the composite hydrogel. The composite hydrogel shows higher swelling rate and pH-sensitivity compared to that of without attapulgite.

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