The relationship between dynamic and pseudo-thermodynamic measures of the glass transition temperature in nanostructured materials

JH Mangalara and ME Mackura and MD Marvin and DS Simmons, JOURNAL OF CHEMICAL PHYSICS, 146, 203316 (2017).

DOI: 10.1063/1.4977520

Despite decades of research on the effects of nanoconfinement on the glass transition temperature T-g, apparent discrepancies between pseudothermodynamic and dynamic measurements of these effects have raised questions regarding the presence of long-ranged interfacial dynamic gradients in glass-forming liquids. Here we show that these differences can be accounted for based on disparities in these methods' weightings over local T-g's within an interfacial gradient. This finding suggests that a majority of experimental data are consistent with a broad interfacial dynamic interphase in glass-forming liquids. Published by AIP Publishing.

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