AFM Interaction Study of Poly(ammonium acrylate) Adsorbed on a Si Surface in Aqueous KCl Solution

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  • Isobe Toshihiro
    Graduate School of Science and Engineering, Tokyo Institute of Technology
  • Nakano Yosuke
    Graduate School of Science and Engineering, Tokyo Institute of Technology
  • Kameshima Yoshikazu
    Graduate School of Environmental Science, Okayama University
  • Okada Kiyoshi
    Materials and Structures Laboratory, Tokyo Institute of Technology
  • Nakajima Akira
    Graduate School of Science and Engineering, Tokyo Institute of Technology

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Interaction force between solid surfaces in aqueous solvent was investigated using scanning probe microscopy. Only short-range repulsive forces were observed in a poly(ammonium acrylate) (PAA) solution. Their range increased concomitantly with increase of the molecular weight of the PAA. In a PAA solution with 0.1–1 mM KCl, the PAA adsorbed onto the Si substrate. Furthermore, the interaction force was described by DLVO theory, and repulsive force is thought to originate from the steric hindrance of the PAA.

収録刊行物

  • Chemistry Letters

    Chemistry Letters 39 (12), 1275-1276, 2010

    公益社団法人 日本化学会

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