Observation of scaling behavior in the liquid-glass transition range from dynamic light scattering in poly(propylene glycol)

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Authors
Sidebottom, David L.
Bergman, R.
Borjesson, L.
Torell, L. M.
Issue Date
1992
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Journal Article
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Abstract
We have performed wide-time-range photon correlation spectroscopy (PCS) on poly(propylene glycol) to probe the dynamics in the glass transition range. In addition to the primary (α) relaxation which shows stretched-exponential behavior, we observe two relaxation processes not witnessed in PCS before. They are assigned to α’ and β processes and exhibit similar power-law decays. All three relaxations are analyzed in terms of recent mode-coupling theories and the inherent scaling relations are verified by independent determinations of the relevant exponents from the spectra.
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Sidebottom, D. L., Bergman, R., Borjesson, L., & Torell, L. M. (1992). Observation of scaling behavior in the liquid-glass transition range from dynamic light scattering in poly(propylene glycol). Physical Review Letters, 68, 3587-3590
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American Physical Society
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1079-7114
0031-9007
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