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 language | English |
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Pages (from-to) | 89-99 |
Number of pages | 11 |
Journal | Macromolecular Chemistry and Physics |
Volume | 203 |
Issue number | 1 |
DOIs | |
Publication status | Published - 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