String model for the dynamics of glass-forming liquids.

Content Provider	Europe PMC
Author	Pazmiño Betancourt, Beatriz A. Douglas, Jack F. Starr, Francis W.
Copyright Year	2014
Abstract	We test the applicability of a living polymerization theory to describe cooperative string-like particle rearrangement clusters (strings) observed in simulations of a coarse-grained polymer melt. The theory quantitatively describes the interrelation between the average string length L, configurational entropy Sconf, and the order parameter for string assembly Φ without free parameters. Combining this theory with the Adam-Gibbs model allows us to predict the relaxation time τ in a lower temperature T range than accessible by current simulations. In particular, the combined theories suggest a return to Arrhenius behavior near Tg and a low T residual entropy, thus avoiding a Kauzmann “entropy crisis.”
Related Links	https://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC5848698&blobtype=pdf
Page Count	10
ISSN	00219606
Volume Number	140
DOI	10.1063/1.4878502
PubMed Central reference number	PMC5848698
Issue Number	20
PubMed reference number	24880303
Journal	The Journal of Chemical Physics [J Chem Phys]
e-ISSN	10897690
Language	English
Publisher	American Institute of Physics
Publisher Date	2014-05-01
Access Restriction	Open
Rights License	0021-9606/2014/140(20)/204509/10/$30.00 Copyright © 2014 AIP Publishing LLC
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Medicine Physical and Theoretical Chemistry