PMID: 11308642Apr 20, 2001Paper

Pressure dependence of structural relaxation time in terms of the Adam-Gibbs model

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
R CasaliniS Corezzi

Abstract

A new equation describing the behavior of the structural relaxation time, tau(T,P), as a function of both pressure and temperature, is discussed. This equation has been derived from the Adam-Gibbs theory by writing the configurational entropy, S(c), in terms of the excess thermal heat capacity and of the molar thermal expansion. Consequently, the parameters introduced in the expression are directly related to specific physical properties of the material, such as the thermal expansion coefficient alpha and the isothermal bulk modulus K0. At a fixed pressure, for low pressures, the found equation reduces to a Vogel-Fulcher-Tammann equation of tau versus temperature with the fragility parameter independent from pressure. The equation for tau(T,P) was successfully tested directly by fitting the dielectric relaxation time data for two isothermal and one isobaric measurements on diglycidyl ether of bisphenol-A, carried out in previous experiments. The parameters estimated by the best fit were in reasonable agreement with the values determined from the known physical properties of the material. Finally, the expression for the change versus pressure of the temperatures at which the same value of tau(max) is obtained (e.g., the change v...Continue Reading

References

Oct 25, 2000·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·M PaluchJ Ziolo
Apr 24, 2002·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·S CorezziD Fioretto
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Jan 1, 1997·Journal of Research of the National Institute of Standards and Technology·C A Angell

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Citations

Dec 13, 2002·Nature·Silvia CorezziPierangelo Rolla
Mar 4, 2006·The Journal of Chemical Physics·Lisa A Brenskelle, Benjamin J McCoy
Oct 24, 2007·The Journal of Chemical Physics·Gustavo A SchwartzJuan Colmenero
Aug 7, 2009·The Journal of Chemical Physics·Gustavo Ariel SchwartzJuan Colmenero
Oct 16, 2007·The Journal of Chemical Physics·Lisa A Brenskelle, Benjamin J McCoy
Mar 17, 2007·The Journal of Chemical Physics·Dmitry V Matyushov, C Austen Angell
Jul 26, 2006·The Journal of Chemical Physics·R CasaliniC M Roland
Jul 23, 2004·The Journal of Chemical Physics·C M RolandR Casalini
Nov 3, 2001·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·R CasaliniD Fioretto
Oct 9, 2002·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Lucia ComezWerner Steffen
Oct 21, 2009·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Kostya Trachenko, V V Brazhkin
Jun 20, 2012·Journal of Biomolecular Structure & Dynamics·Meike HuttJürgen Pleiss
Jul 15, 2015·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·K GrzybowskaM Paluch
Aug 11, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Nicolas GiovambattistaFrancis W Starr
Aug 25, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·L ComezW Steffen
Apr 12, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Riccardo CasaliniC Michael Roland
Sep 21, 2002·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Jacek GapińskiAdam Patkowski
Jul 13, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·A BarbieriD Leporini
Sep 20, 2012·The Journal of Physical Chemistry Letters·E MasiewiczM Paluch
Sep 13, 2019·The Journal of Physical Chemistry. B·Charley HutchisonUdayan Mohanty
Jan 24, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·X Y LangQ Jiang

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