Anomalous concentration effects of Zwitterionic telechelic polymer solutions in electric fields

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1 Citation (Scopus)

Abstract

Transient electric birefringence (TEB) measurements have been made on a number of low molecular weight (4.8 × 103, 14.4 × 103 and 34.7 × 103 g · mol-1) α,ω-Zwitterionic telechelic polystyrene (ZT-PS) in dilute cyclohexanone solutions. Anomalous birefringence has been observed with a distinctive change in sign of the overall birefringence at a critical concentration, c*. From the analysis of the relaxation behaviour in terms of a bead-spring model chain dimensions and diffusion coefficients have been determined. These indicate that even at the lowest concentration, aggregation occurs with a transition to extended networks at c ≥ c*.

Original languageEnglish
Pages (from-to)89-99
Number of pages11
JournalMacromolecular Chemistry and Physics
Volume203
Issue number1
DOIs
Publication statusPublished - 9 Jan 2002

Keywords

  • Dynamics
  • Kerr birefringence
  • Orientation
  • Polystyrene
  • Zwitterionic telechelic

ASJC Scopus subject areas

  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry
  • Polymers and Plastics

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