Theoretical and experimental models on viscosity: I. Glycerol.
The main aim of the present work is to show, for the case of glycerol, the connection between the macroscopic fragility parameter, defined as m = (d log eta)/(d(Tg/T))|T=Tg+, and the average number of H-bonds per molecule. Furthermore, the relation between the macroscopic and microscopic definitions of fragility, which takes into account the temperature dependence of the atomic mean square displacement, is discussed.
Magazù
Salvatore
S
Dipartimento di Fisica, Università di Messina, P.O. Box 55, I-98166 Messina, Italy. smagazu@unime.it
Migliardo
Federica
F
Malomuzh
Nicolay P
NP
Blazhnov
Ivan V
IV