Molecular and supramolecular structure of sulfonated polystyrene ionomers in solutions

V. T. Lebedev, Gy Török, A. B. Melnikov, D. N. Orlova, I. N. Ivanova

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The structure of sulfonated polystyrene ionomers in chloroform was studied by molecular hydrodynamics and neutron scattering methods. The ionomer containing 1.35 mol % of ionogenic SO3Na groups undergoes the coil-globule transition and transforms to a micellar structure due to attraction of polar groups concentrated in the core surrounded by nonpolar chain fragments. At a sulfonation degree of 2.6 mol %, selfassembly of SO3Na groups with adjacent chain segments to the structure such as a spherical layer, i.e., vesicle (hollow micelle with solvent) with boundaries formed by nonpolar chain fragments, is observed. Vesicular structures in solution associate in pairs. Intra- and interchain associations are significantly enhanced by hydrogen bonds in ionomers with acid groups SO3H (2.6 and 4.47 mol %) which stabilize micellar structures, promoting their assembly into chain clusters and fragments of the simple cubic lattice.

Original languageEnglish
Pages (from-to)582-591
Number of pages10
JournalJournal of Surface Investigation
Volume3
Issue number4
DOIs
Publication statusPublished - Aug 1 2009

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

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