AFM interaction study of poly(ammonium acrylate) adsorbed on a Si surface in aqueous KCl solution

Toshihiro Isobe, Yosuke Nakano, Yoshikazu Kameshima, Kiyoshi Okada, Akira Nakajima

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Interaction force between solid surfaces in aqueous solvent was investigated using scanning probe microscopy. Only shortrange 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 0.11mM 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.

Original languageEnglish
Pages (from-to)1275-1276
Number of pages2
JournalChemistry Letters
Issue number12
Publication statusPublished - 2010


ASJC Scopus subject areas

  • Chemistry(all)

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