Glasses can be formed in numerous ways, involving very different microscopic processes. Here we report a dielectric and photon-correlation study of chemical vitrification, a process where the slowdown in the dynamics of a liquid system is controlled by the irreversible formation of chemical bonds. We find that vitrification dynamics in chemically reactive systems can be explained in terms of their configurational restrictions in the same manner as in stable glass-forming liquids under cooling or compression.
Physical and chemical vitrification: the role of configurational entropy
COREZZI, Silvia
;COMEZ, Lucia;FIORETTO, Daniele
2004
Abstract
Glasses can be formed in numerous ways, involving very different microscopic processes. Here we report a dielectric and photon-correlation study of chemical vitrification, a process where the slowdown in the dynamics of a liquid system is controlled by the irreversible formation of chemical bonds. We find that vitrification dynamics in chemically reactive systems can be explained in terms of their configurational restrictions in the same manner as in stable glass-forming liquids under cooling or compression.File in questo prodotto:
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