Theoretical and experimental models on viscosity: I. Glycerol |
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Authors: | Magazù Salvatore Migliardo Federica Malomuzh Nicolay P Blazhnov Ivan V |
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Institution: | Dipartimento di Fisica, Università di Messina, P.O. Box 55, I-98166 Messina, Italy. smagazu@unime.it |
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Abstract: | 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. |
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