• DOI:10.1103/PhysRevE.66.020803
Corpus ID: 37682275

Dynamic crossover to tricriticality and anomalous slowdown of critical fluctuations by entanglements in polymer solutions.

@article{Kostko2002DynamicCT,
  title={Dynamic crossover to tricriticality and anomalous slowdown of critical fluctuations by entanglements in polymer solutions.},
  author={A. F. Kostko and M. A. Anisimov and J. Sengers},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  year={2002},
  volume={66 2 Pt 1},
  pages={
          020803
        }
}

A. F. Kostko, M. A. Anisimov, J. Sengers

Published 2002

Physics, Medicine

Physical review. E, Statistical, nonlinear, and soft matter physics

We have performed accurate dynamic light-scattering measurements near critical demixing points of solutions of polystyrene in cyclohexane with polymer molecular weight ranging from 200 000 to 11.4 x 10(6). Two dynamic modes have been observed, "slow" and "fast," which result from a coupling between diffusive relaxation of critical fluctuations of the concentration and viscoelastic relaxation associated with the entanglement network of the polymer chains. The coupling with the viscoelastic mode… CONTINUE READING

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