Soluble Stoichiometric Complexes from Poly(N-ethyl-4-vinylpyridinium) Cations and Poly(ethylene oxide)-block-polymethacrylate Anions

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  • Kabanov, Alexander V.
  • Bronich, Tatiana K.
    • Other Affiliation: Department of Pharmaceutical Sciences, University of Nebraska Medical Center
  • Kabanov, Victor A.
    • Other Affiliation: Department of Polymer Sciences, Moscow State University
  • Yu, Kui
    • Other Affiliation: Department of Chemistry, McGill University
  • Eisenberg, Adi
    • Other Affiliation: Department of Chemistry, McGill University
Abstract
  • Block ionomer complexes formed between the block copolymers containing poly(sodium methacrylate) (PMANa) and poly(ethylene oxide) (PEO) segments and poly(N-ethyl-4-vinylpyridinium bromide) (PEVP) were investigated. The data obtained suggest that (i) these systems form water-soluble stoichiometric complexes; (ii) these complexes are stable in a much broader pH range compared to the polyelectrolyte complexes prepared from homopolymers; (iii) they self-assemble to form the core of a micelle comprised of neutralized polyions, surrounded by the PEO corona; (iv) they are salt sensitive since they fall apart as the salt concentration increases beyond a critical value; and (v) they can participate in the cooperative polyion substitution reactions. Therefore, these complexes represent a new class of hybrid materials which combine properties of polyelectrolyte complexes and block copolymer micelles.
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  • Article
Rights statement
  • In Copyright
Journal title
  • Macromolecules
Journal volume
  • 29
Journal issue
  • 21
Page start
  • 6797
Page end
  • 6802
Language
  • English
Version
  • Postprint
ISSN
  • 0024-9297

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