Swelling behavior of polyacrylamide/laponite clay nanocomposite hydrogels: pH-sensitive property

@article{Li2009SwellingBO,
  title={Swelling behavior of polyacrylamide/laponite clay nanocomposite hydrogels: pH-sensitive property},
  author={Peng Li and N. Kim and Siddaramaiah and J. Lee},
  journal={Composites Part B-engineering},
  year={2009},
  volume={40},
  pages={275-283}
}
Abstract In this study, an investigation is carried out on the influence of varying clay contents (25–43%), pH values (2–11 buffer solutions), heat treatment, temperatures (25–60 °C) and ionic strengths (saline solution, 10−7–0.1 M) on the water absorbency of polyacrylamide (PAAm)/laponite nanocomposite (NC) hydrogels in the absence of polyelectrolyte. For the influence of pH value on swelling behaviors, a maximum swelling ratio occurs at pH 11. Heat treatment of the hydrogels significantly… Expand
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