Glassy dynamics predicted by mutual role of free and activation volumes.
basic_science · Level V
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- Record sourced from PubMed, PMID 31149697.
- Also identified by DOI 10.1039/c9sm00363k.
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Abstract
Broadband Dielectric Spectroscopy (BDS) at elevated pressures and Positron Annihilation Lifetime Spectroscopy (PALS) are employed to elucidate the importance of the ratio of activation and free volumes during vitrification. We show that this ratio has a linear correlation with the structural relaxation of glass forming liquids in a wide temperature range hence engendering it as a vital input in the description of the dynamic glass transition.