Reversible pH-dependent properties of multilayer microcapsules made of weak polyelectrolytes

Tatjana Mauser, Christophe Déjugnat, Gleb B. Sukhorukov

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182 Citations (Scopus)


We investigated microcapsules composed of the weak polyelectrolytes poly(allylamine hydrochloride) (PAH) and poly(methacrylic acid) (PMA) assembled on calcium carbonate cores. These capsules are stable in the pH range from 2.5 to 11.5, undergoing reversible swelling in the pH interval froin 2.7 to 2.6. Capsule swelling occurs at a protonation degree above 90%. The pH-dependent size variation of PAH/PMA capsules is blocked after crosslinking of the polyelectrolyte layers.

Original languageEnglish
Pages (from-to)1781-1785
Number of pages5
JournalMacromolecular Rapid Communications
Issue number20
Publication statusPublished - 22 Oct 2004
Externally publishedYes


  • Crosslinking
  • Layer-by-layer
  • PH sensitivity
  • Stimuli-responsive
  • Swelling


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