Collective theories of supercooled liquids: Supporting polariscopic and kinetic evidence in methylcyclohexane glass above T g, using a benzene probe
- 15 November 1980
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 73 (10) , 5330-5336
- https://doi.org/10.1063/1.439963
Abstract
At constant temperature, structural relaxation occurs over hours with removal of strain in the viscous liquid, a change in the phosphorescence lifetime of the guest, benzene, and an increase in the viscosity. The lifetime is found to be unaffected by strain. Thus only dynamic relaxation effect(s) may affect the lifetime; the discussion of these shows that none involving internal degrees of freedom of the host or guest can be the cause. Therefore only properties of the supercooled liquid, taken as a whole, can be the cause; this provides strong support for the structure-independent theoretical approaches of Goldstein and Williams to account for relaxation of any viscous liquid near Tg.Keywords
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