Single-coil to aggregate transition of sulfonated polystyrene ionomers in xylene studied by dynamic light scattering

Kirill N. Bakeev, Iwao Teraoka, William J. MacKnight, Frank E. Karasz

Research output: Contribution to journalArticle

Abstract

A single-coil to aggregate transition in the zinc salts of sulfonated polystyrene ionomers in xylene was studied by dynamic light scattering. As the polymer concentration was increased in the dilute regime, the measured average diffusion coefficient of the polymer molecules decreased, and it was accompanied by a broadening in the distribution of the coefficient. Spectral analysis of the light scattering autocorrelation function revealed a clear transition from a single- to a dual-decay rate mode with increasing solute concentration, the faster being identified as the diffusion of isolated coils. Thus the slowing-down of the average diffusion with increasing polymer concentration was ascribed to the emergence of aggregates. The overall weight fraction of the aggregates, however, remained low.

Original languageEnglish (US)
Pages (from-to)1972-1974
Number of pages3
JournalMacromolecules
Volume26
Issue number8
StatePublished - 1993

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Xylenes
Ionomers
Polystyrenes
Dynamic light scattering
Xylene
Polymers
Autocorrelation
Light scattering
Spectrum analysis
Zinc
Salts
Molecules

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

Single-coil to aggregate transition of sulfonated polystyrene ionomers in xylene studied by dynamic light scattering. / Bakeev, Kirill N.; Teraoka, Iwao; MacKnight, William J.; Karasz, Frank E.

In: Macromolecules, Vol. 26, No. 8, 1993, p. 1972-1974.

Research output: Contribution to journalArticle

Bakeev, Kirill N. ; Teraoka, Iwao ; MacKnight, William J. ; Karasz, Frank E. / Single-coil to aggregate transition of sulfonated polystyrene ionomers in xylene studied by dynamic light scattering. In: Macromolecules. 1993 ; Vol. 26, No. 8. pp. 1972-1974.
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