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Soft Matter and Biological Physics
Eur. Phys. J. E 9, 135-141 (2002)
DOI: 10.1140/epje/i2002-10069-1

Slow regions percolate near glass transition

Y. Yilmaz1, A. Erzan1, 2 and Ö. Pekcan1

1  Department of Physics, Faculty of Sciences and Letters, Istanbul Technical University, Maslak 80626, Istanbul, Turkey
2  Gürsey Institute, P.O. Box 6, Çengelköy 81220, Istanbul, Turkey


(Received 29 August 2002 / Published online: 27 November 2002)

A nanosecond scale in situ probe reveals that a bulk linear polymer undergoes a sharp phase transition as a function of the degree of conversion, as it nears the glass transition. The scaling behaviour is in the same universality class as percolation. The exponents $\gamma$ and $\beta$ are found to be $1.7 \pm 0.1$ and $0.41\pm 0.01$ in agreement with the best percolation results in three dimensions.

64.60.Ak - Renormalization-group, fractal, and percolation studies of phase transitions.
64.70.Pf - Glass transitions.
82.35.-x - Polymers: properties; reactions; polymerization.
83.80.Sg - Polymer melts.

© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2002